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5. Investigating the association between glycaemic traits and colorectal cancer in the Japanese population using Mendelian randomisation

Author

Hanyuda, Akiko, Goto, Atsushi, Katagiri, Ryoko, Koyanagi, Yuriko N., Nakatochi, Masahiro, Sutoh, Yoichi, Nakano, Shiori, Oze, Isao, Ito, Hidemi, Yamaji, Taiki, Sawada, Norie, Iwagami, Masao, Kadota, Aya, Koyama, Teruhide, Katsuura-Kamano, Sakurako, Ikezaki, Hiroaki, Tanaka, Keitaro, Takezaki, Toshiro, Imoto, Issei, Suzuki, Midori, Momozawa, Yukihide, Takeuchi, Kenji, Narita, Akira, Hozawa, Atsushi, Kinoshita, Kengo, Shimizu, Atsushi, Tanno, Kozo, Matsuo, Keitaro, Tsugane, Shoichiro, Wakai, Kenji, Sasaki, Makoto, Yamamoto, Masayuki, and Iwasaki, Motoki

Published
2023
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7. Association of 25-hydroxyvitamin D with risk of overall and colorectal cancer among Japanese using a Mendelian randomization approach

Author

Katagiri, Ryoko, Goto, Atsushi, Nakano, Shiori, Nakatochi, Masahiro, Koyanagi, Yuriko N., Iwagami, Masao, Hanyuda, Akiko, Yamaji, Taiki, Sawada, Norie, Nakamura, Yohko, Nakamura, Sho, Kuriki, Kiyonori, Suzuki, Sadao, Imoto, Issei, Momozawa, Yukihide, Oze, Isao, Ito, Hidemi, Tsugane, Shoichiro, Wakai, Kenji, Matsuo, Keitaro, and Iwasaki, Motoki

Published
2023
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10. Low HbA1c levels and all-cause or cardiovascular mortality among people without diabetes: the US National Health and Nutrition Examination Survey 1999-2015.

Author

Inoue, Kosuke, Nianogo, Roch, Telesca, Donatello, Goto, Atsushi, Khachadourian, Vahe, Tsugawa, Yusuke, Sugiyama, Takehiro, Mayeda, Elizabeth Rose, and Ritz, Beate

Subjects
Humans, Cardiovascular Diseases, Diabetes Mellitus, Nutrition Surveys, Risk Factors, Adult, Glycated Hemoglobin, Low HbA1c, NHANES, cardiovascular, machine learning, mortality, parametric g-formula, Diabetes, Cardiovascular, Nutrition, Prevention, Good Health and Well Being, Glycated Hemoglobin A, Statistics, Public Health and Health Services, Epidemiology
Abstract

ObjectiveIt is unclear whether relatively low glycated haemoglobin (HbA1c) levels are beneficial or harmful for the long-term health outcomes among people without diabetes. We aimed to investigate the association between low HbA1c levels and mortality among the US general population.MethodsThis study includes a nationally representative sample of 39 453 US adults from the National Health and Nutrition Examination Surveys 1999-2014, linked to mortality data through 2015. We employed the parametric g-formula with pooled logistic regression models and the ensemble machine learning algorithms to estimate the time-varying risk of all-cause and cardiovascular mortality by HbA1c categories (low, 4.0 to

Published
2021

18. Interface-sensitive nuclear magnetic resonance at a semiconductor heterojunction using hyperpolarization

Author

Goto, Atsushi, Hashi, Kenjiro, Ohki, Shinobu, and Shimizu, Tadashi

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
Abstract

We demonstrate an interface-sensitive NMR in a semiconducting nanostructure, where an NMR signal from the minute heterojunction region of a model heterojunction structure (In$_{0.48}$Ga$_{0.52}$P/GaAs) is detected by using nuclear hyperpolarization created by optical pumping. The key to the detection is the use of minute lattice distortions occurring at the heterojunction due to the lattice mismatch, which enables us to create and localize hyperpolarization at the heterojunction and distinguish it from the other parts. In particular, the suppression of nuclear spin diffusion by the spatial variation in the strain and the resultant unexpectedly stable hyperpolarization at the heterojunction are the keys to successful detection., Comment: 15 pages, 4 figures

Published
2017
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21. Genetic variants in sex hormone pathways and the risk of type 2 diabetes among African American, Hispanic American, and European American postmenopausal women in the US.

Author

Goto, Atsushi, Chen, Brian, Chan, Kei-Hang, Lee, Cathy, Nelson, Sarah, Crenshaw, Andrew, Bookman, Ebony, Margolis, Karen, Sale, Michèle, Ng, Maggie, Reiner, Alexander, and Liu, Simin

Subjects
diabetes risk, sex hormone pathways, single nucleotide polymorphisms, 单核苷酸多态性, 性激素途径, 糖尿病风险, Black or African American, Aged, Biomarkers, Case-Control Studies, Diabetes Mellitus, Type 2, Female, Follow-Up Studies, Genome-Wide Association Study, Hispanic or Latino, Humans, Middle Aged, Polymorphism, Single Nucleotide, Postmenopause, Prognosis, Receptors, Progesterone, White People
Abstract

BACKGROUND: Sex hormones are implicated in the development of diabetes. However, whether genetic variations in sex hormone pathways (SHPs) contribute to the risk of type 2 diabetes mellitus (T2DM) remains to be determined. This study investigated associations between genetic variations in all candidate genes in SHPs and T2DM risk among a cohort of women participating in the Womens Health Initiative (WHI). METHODS: Single nucleotide polymorphisms (SNPs) located within 30 kb upstream and downstream of SHP genes were comprehensively examined in 8180 African American, 3498 Hispanic American, and 3147 European American women in the WHI. In addition, whether significant SNPs would be replicated in independent populations was examined. RESULTS: After adjusting for age, region, and ancestry estimates and correcting for multiple testing, seven SNPs were significantly associated with the risk of T2DM among Hispanic American women were identified in the progesterone receptor (PGR) gene, with rs948516 showing the greatest significance (odds ratio 0.67; 95% confidence interval 0.57-0.78; P = 8.8 × 10-7 ; false discovery rate, Q = 7.8 × 10-4 ). These findings were not replicated in other ethnic groups in the WHI or in sex-combined analyses in replication studies. CONCLUSION: Significant signals were identified implicating the PGR gene in T2DM development in Hispanic American women in the WHI, which are consistent with genome-wide association studies findings linking PGR to glucose homeostasis. Nevertheless, the PGR SNPs-T2DM association was not statistically significant in other ethnic populations. Further studies, especially sex-specific analyses, are needed to confirm the findings and clarify the role of SHPs in T2DM.

Published
2018

22. Third Report of the Japan Diabetes Society/Japanese Cancer Association Joint Committee on Diabetes and Cancer: Summary of the results of a questionnaire survey of oncologists and diabetologists—Secondary publication

Author

Goto, Atsushi, primary, Ohashi, Ken, additional, Noda, Mitsuhiko, additional, Noto, Hiroshi, additional, Ueki, Kohjiro, additional, Inoue, Manami, additional, Nishimura, Rimei, additional, Takahashi, Shin, additional, Ioka, Tatsuya, additional, Oshima, Masanobu, additional, Fujibayashi, Kazutoshi, additional, Tsuji, Akihito, additional, Kodaira, Makoto, additional, Tamakoshi, Akiko, additional, Mimori, Koshi, additional, Tanabe, Yuko, additional, Hara, Eiji, additional, Matsuo, Keitaro, additional, Murakami, Yoshinori, additional, and Watada, Hirotaka, additional

Published
2024
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23. Validity of self-reported Helicobacter pylori eradication treatment from questionnaire and interview surveys of the JPHC-NEXT study: comparison with prescription history from insurance claims data

Author

Kihara, Tomomi, primary, Yamagishi, Kazumasa, additional, Imatoh, Takuya, additional, Ihira, Hikaru, additional, Goto, Atsushi, additional, Iso, Hiroyasu, additional, Sawada, Norie, additional, Tsugane, Shoichiro, additional, and Inoue, Manami, additional

Published
2024
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29. Introduction

Author

Boyer, Tim, primary, Bartow-Gillies, Ellen, additional, Abida, A., additional, Ades, Melanie, additional, Adler, Robert, additional, Adusumilli, Susheel, additional, Agyakwah, W., additional, Ahmasuk, Brandon, additional, Aldeco, Laura S., additional, Alexe, Mihai, additional, Alfaro, Eric J., additional, Allan, Richard P., additional, Allgood, Adam, additional, Alves, Lincoln. M., additional, Amador, Jorge A., additional, Anderson, John, additional, Andrade, B., additional, Anneville, Orlane, additional, Aono, Yasuyuki, additional, Arguez, Anthony, additional, Arosio, Carlo, additional, Atkinson, C., additional, Augustine, John A., additional, Avalos, Grinia, additional, Azorin-Molina, Cesar, additional, Backensto, Stacia A., additional, Bader, Stephan, additional, Baez, Julian, additional, Baiman, Rebecca, additional, Ballinger, Thomas J., additional, Banwell, Alison F., additional, Bardin, M. Yu, additional, Barichivich, Jonathan, additional, Barnes, John E., additional, Barreira, Sandra, additional, Beadling, Rebecca L., additional, Beck, Hylke E., additional, Becker, Emily J., additional, Bekele, E., additional, Bellido, Guillem Martín, additional, Bellouin, Nicolas, additional, Benedetti, Angela, additional, Benestad, Rasmus, additional, Berne, Christine, additional, Berner, Logan. T., additional, Bernhard, Germar H., additional, Bhatt, Uma S., additional, Bhuiyan, A. E., additional, Bigalke, Siiri, additional, Biló, Tiago, additional, Bissolli, Peter, additional, Bjerke Jarle, W., additional, Blagrave, Kevin, additional, Blake, Eric S., additional, Blenkinsop, Stephen, additional, Blunden, Jessica, additional, Bochníček, Oliver, additional, Bock, Olivier, additional, Bodenstein, Barbara, additional, Bodin, Xavier, additional, Bosilovich, Michael, additional, Boucher, Olivier, additional, Bozkurt, Deniz, additional, Brettschneider, Brian, additional, Bringas, Francis G., additional, Bringas, Francis, additional, Buechler, Dennis, additional, Buehler, Stefan A., additional, Bukunt, Brandon, additional, Calderón, Blanca, additional, Camargo, Suzana J., additional, Campbell, Jayaka, additional, Campos, Diego, additional, Carrea, Laura, additional, Carter, Brendan R., additional, Cetinić, Ivona, additional, Chambers, Don P., additional, Chan, Duo, additional, Chandler, Elise, additional, Chang, Kai-Lan, additional, Chen, Hua, additional, Chen, Lin, additional, Cheng, Lijing, additional, Cheng, Vincent Y. S., additional, Chomiak, Leah, additional, Christiansen, Hanne H., additional, Christy, John R., additional, Chung, Eui-Seok, additional, Ciasto, Laura M., additional, Clarke, Leonardo, additional, Clem, Kyle R., additional, Clingan, Scott, additional, Coelho, Caio A.S., additional, Cohen, Judah L., additional, Coldewey-Egbers, Melanie, additional, Colwell, Steve, additional, Cooper, Owen R., additional, Cornes, Richard C., additional, Correa, Kris, additional, Costa, Felipe, additional, Covey, Curt, additional, Coy, Lawrence, additional, Créatux, Jean-François, additional, Crhova, Lenka, additional, Crimmins, Theresa, additional, Cronin, Meghan F., additional, Cropper, Thomas, additional, Crotwell, Molly, additional, Culpepper, Joshua, additional, Cunha, Ana P., additional, Cusicanqui, Diego, additional, Datta, Rajashree T., additional, Davis, Sean M., additional, De Bock, Veerle, additional, de Jeu, Richard A. M., additional, De Laat, Jos, additional, Decharme, Bertrand, additional, Degenstein, Doug, additional, Delaloye, Reynald, additional, Demircan, Mesut, additional, Derksen, Chris, additional, Deus, Ricardo, additional, Dhurmea, K. R., additional, Diamond, Howard J., additional, Dirkse, S., additional, Divine, Dmitry, additional, Dokulil, Martin T., additional, Donat, Markus G., additional, Dong, Shenfu, additional, Dorigo, Wouter A., additional, Drost Jensen, Caroline, additional, Druckenmiller, Matthew L., additional, Drumond, Paula, additional, du Plessis, Marcel, additional, Dugan, Hilary A., additional, Dulamsuren, Dashkhuu, additional, Dunmire, Devon, additional, Dunn, Robert J. H., additional, Durre, Imke, additional, Dusek, Robert, additional, Dutton, Geoff, additional, Duveiller, Gregory, additional, Ekici, Mithat, additional, Elias Chereque, Alesksandra, additional, ElKharrim, M., additional, Epstein, Howard E., additional, Espinoza, Jhan-Carlo, additional, Estilow, Thomas W., additional, Estrella, Nicole, additional, Fauchereau, Nicolas, additional, Fausto, Robert S., additional, Feely, Richard A., additional, Fenimore, Chris, additional, Fereday, David, additional, Fettweis, Xavier, additional, Fioletov, vitali E., additional, Flemming, Johannes, additional, Fogarty, Chris, additional, Fogt, Ryan L., additional, Forbes, Bruce C., additional, Foster, Michael J., additional, Franz, Bryan A., additional, Freeman, Natalie M., additional, Fricker, Helen A., additional, Frith, Stacey M., additional, Froidevaux, Lucien, additional, Frost, Gerald V. (JJ), additional, Fuhrman, Steven, additional, Füllekrug, Martin, additional, Ganter, Catherine, additional, Gao, Meng, additional, Gardner, Alex S., additional, Garforth, Judith, additional, Garg, Jay, additional, Gerland, Sebastian, additional, Gibbes, Badin, additional, Gille, Sarah T., additional, Gilson, John, additional, Gleason, Karin, additional, Gobron, Nadine, additional, Goetz, Scott J., additional, Goldenberg, Stanley B., additional, Goni, Gustavo, additional, Goodman, Steven, additional, Goto, Atsushi, additional, Grooß, Jens-Uwe, additional, Gruber, Alexander, additional, Gu, Guojun, additional, Guard, Charles “Chip” P., additional, Hagos, S., additional, Hahn, Sebastian, additional, Haimberger, Leopold, additional, Hall, Bradley D., additional, Hamlington, Benjamin D., additional, Hanna, Edward, additional, Hanssen-Bauer, Inger, additional, Harnos, Daniel S., additional, Harris, Ian, additional, He, Qiong, additional, Heim, Richard R., additional, Hellström, Sverker, additional, Hemming, Deborah L., additional, Hendricks, Stefan, additional, Hicks, J., additional, Hidalgo, Hugo G., additional, Hirschi, Martin, additional, Ho, Shu-peng (Ben), additional, Hobbs, W., additional, Holmes, Robert M., additional, Holzworth, Robert, additional, Hrbáček, Filip, additional, Hu, Guojie, additional, Hu, Zeng-Zhen, additional, Huang, Boyin, additional, Huang, Hongjie, additional, Hurst, Dale F., additional, Ialongo, Iolanda, additional, Inness, Antje, additional, Isaksen, Ketil, additional, Ishii, Masayoshi, additional, Jadra, Gerardo, additional, Jevrejeva, Svetlana, additional, John, Viju O., additional, Johns, W., additional, Johnsen, Bjørn, additional, Johnson, Bryan, additional, Johnson, Gregory C., additional, Jones, Philip D., additional, Jones, Timothy, additional, Josey, Simon A., additional, Jumaux, G., additional, Junod, Robert, additional, Kääb, Andreas, additional, Kabidi, K., additional, Kaiser, Johannes W., additional, Kaler, Robb S.A., additional, Kaleschke, Lars, additional, Kaufmann, Viktor, additional, Kazemi, Amin Fazl, additional, Keller, Linda M., additional, Kellerer-Pirklbauer, Andreas, additional, Kendon, Mike, additional, Kennedy, John, additional, Kent, Elizabeth C., additional, Kerr, Kenneth, additional, Khan, Valentina, additional, Khiem, Mai Van, additional, Kidd, Richard, additional, Kim, Mi Ju, additional, Kim, Seong-Joong, additional, Kipling, Zak, additional, Klotzbach, Philip J., additional, Knaff, John A., additional, Koppa, Akash, additional, Korshunova, Natalia N., additional, Kraemer, Benjamin M., additional, Kramarova, Natalya A., additional, Kruger, A. C., additional, Kruger, Andries, additional, Kumar, Arun, additional, L’Heureux, Michelle, additional, La Fuente, Sofia, additional, Laas, Alo, additional, Labe, Zachary M., additional, Lader, Rick, additional, Lakatos, Mónika, additional, Lakkala, Kaisa, additional, Lam, Hoang Phuc, additional, Lan, Xin, additional, Landschützer, Peter, additional, Landsea, Chris W., additional, Lang, Timothy, additional, Lankhorst, Matthias, additional, Lantz, Kathleen O., additional, Lara, Mark J., additional, Lavado-Casimiro, Waldo, additional, Lavers, David A., additional, Lazzara, Matthew A., additional, Leblanc, Thierry, additional, Lee, Tsz-Cheung, additional, Leibensperger, Eric M., additional, Lennard, Chris, additional, Leuliette, Eric, additional, Leung, Kinson H. Y., additional, Lieser, Jan L., additional, Likso, Tanja, additional, Lin, I-I., additional, Lindsey, Jackie, additional, Liu, Yakun, additional, Locarnini, Ricardo, additional, Loeb, Norman G., additional, Loomis, Bryant D., additional, Lorrey, Andrew M., additional, Loyola, Diego, additional, Lu, Rui, additional, Lumpkin, Rick, additional, Luo, Jing-Jia, additional, Luojus, Kari, additional, Lyman, John M., additional, Maberly, Stephen C., additional, Macander, Matthew J., additional, MacFerrin, Michael, additional, MacGilchrist, Graeme A., additional, MacLennan, Michelle L., additional, Madelon, Remi, additional, Magee, Andrew D., additional, Magnin, Florence, additional, Mamen, Jostein, additional, Mankoff, Ken D., additional, Manney, Gloria L., additional, Marcinonienė, Izolda, additional, Marengo, Jose A., additional, Marjan, Mohammadi, additional, Martínez, Ana E., additional, Massom, Robert A., additional, Matsuzaki, Shin-Ichiro, additional, May, Linda, additional, Mayer, Michael, additional, Mazloff, Matthew R., additional, McAfee, Stephanie A., additional, McBride, C., additional, McCabe, Matthew F., additional, McClelland, James W., additional, McPhaden, Michael J., additional, Mcvicar, Tim R., additional, Mears, Carl A., additional, Meier, Walter N., additional, Mekonnen, A., additional, Menzel, Annette, additional, Merchant, Christopher J., additional, Merrifield, Mark A., additional, Meyer, Michael F., additional, Meyers, Tristan, additional, Mikolajczyk, David E., additional, Miller, John B., additional, Miralles, Diego G., additional, Misevicius, Noelia, additional, Mishonov, Alexey, additional, Mitchum, Gary T., additional, Moat, Ben I., additional, Moesinger, Leander, additional, Moise, Aurel, additional, Molina-Carpio, Jorge, additional, Monet, Ghislaine, additional, Montzka, Stephan A., additional, Moon, Twila A., additional, Moore, G. W. K., additional, Mora, Natali, additional, Morán, Johnny, additional, Morehen, Claire, additional, Morice, Colin, additional, Mostafa, A. E., additional, Mote, Thomas L., additional, Mrekaj, Ivan, additional, Mudryk, Lawrence, additional, Mühle, Jens, additional, Müller, Rolf, additional, Nance, David, additional, Nash, Eric R., additional, Nerem, R. Steven, additional, Newman, Paul A., additional, Nicolas, Julien P., additional, Nieto, Juan J., additional, Noetzli, Jeannette, additional, Noll, Ben, additional, Norton, Taylor, additional, Nyland, Kelsey E., additional, O’Keefe, John, additional, Ochwat, Naomi, additional, Oikawa, Yoshinori, additional, Okunaka, Yuka, additional, Osborn, Timothy J., additional, Overland, James E., additional, Park, Taejin, additional, Parrington, Mark, additional, Parrish, Julia K., additional, Pasch, Richard J., additional, Pascual Ramírez, Reynaldo, additional, Pellet, Cécile, additional, Pelto, Mauri S., additional, Perčec Tadić, Melita, additional, Perovich, Donald K., additional, Petersen, Guðrún Nína, additional, Petersen, Kyle, additional, Petropavlovskikh, Irina, additional, Petty, Alek, additional, Pezza, Alexandre B., additional, Pezzi, Luciano P., additional, Phillips, Coda, additional, Phoenix, Gareth K., additional, Pierson, Don, additional, Pinto, Izidine, additional, Pires, Vanda, additional, Pitts, Michael, additional, Po-Chedley, Stephen, additional, Pogliotti, Paolo, additional, Poinar, Kristin, additional, Polvani, Lorenzo, additional, Preimesberger, Wolfgang, additional, Price, Colin, additional, Pulkkanen, Merja, additional, Purkey, Sarah G., additional, Qiu, Bo, additional, Quisbert, Kenny, additional, Quispe, Willy R., additional, Rajeevan, M., additional, Ramos, Andrea M., additional, Randel, William J., additional, Rantanen, Mika, additional, Raphael, Marilyn N., additional, Reagan, James, additional, Recalde, Cristina, additional, Reid, Phillip, additional, Rémy, Samuel, additional, Reyes Kohler, Alejandra J., additional, Ricciardulli, Lucrezia, additional, Richardson, Andrew D., additional, Ricker, Robert, additional, Robinson, David A., additional, Robjhon, M., additional, Rocha, Willy, additional, Rodell, Matthew, additional, Rodriguez Guisado, Esteban, additional, Rodriguez-Fernandez, Nemesio, additional, Romanovsky, Vladimir E., additional, Ronchail, Josyane, additional, Rosencrans, Matthew, additional, Rosenlof, Karen H., additional, Rösner, Benjamin, additional, Rösner, Henrieke, additional, Rozanov, Alexei, additional, Rozkošný, Jozef, additional, Rubek, Frans, additional, Rusanovskaya, Olga O., additional, Rutishauser, This, additional, Sabeerali, C. T., additional, Salinas, Roberto, additional, Sánchez-Lugo, Ahira, additional, Santee, Michelle L., additional, Santini, Marcelo, additional, Sato, Katsunari, additional, Sawaengphokhai, Parnchai, additional, Sayouri, A., additional, Scambos, Theodore, additional, Schenzinger, Verena, additional, Schimanke, Semjon, additional, Schlegel, Robert W., additional, Schmid, Claudia, additional, Schmid, Martin, additional, Schneider, Udo, additional, Schreck, Carl J., additional, Schultz, Cristina, additional, _, _, additional, Segele, Z. T., additional, Sensoy, Serhat, additional, Serbin, Shawn P., additional, Serreze, Mark C., additional, Setiawan, Amsari Mudzakir, additional, Sezaki, Fumi, additional, Sharma, Sapna, additional, Sharp, Jonathan D., additional, Sheffield, Gay, additional, Shi, Jia-Rui, additional, Shi, Lei, additional, Shiklomanov, Alexander I., additional, Shiklomanov, Nikolay I., additional, Shimaraeva, Svetlana V., additional, Shukla, R., additional, Siegel, David A., additional, Silow, Eugene A., additional, Sima, F., additional, Simmons, Adrian J., additional, Smeed, David A., additional, Smith, Adam, additional, Smith, Matthew M., additional, Smith, Sharon L., additional, Soden, Brian J., additional, Sofieva, Viktoria, additional, Souza, Everaldo, additional, Sparks, Tim H., additional, Spence-Hemmings, Jacqueline, additional, Spencer, Robert G. M., additional, Spillane, Sandra, additional, Sreejith, O. P., additional, Srivastava, A. K., additional, Stackhouse, Paul W., additional, Stammerjohn, Sharon, additional, Stauffer, Ryan, additional, Steinbrecht, Wolfgang, additional, Steiner, Andrea K., additional, Stella, Jose L., additional, Stephenson, Tannecia S., additional, Stradiotti, Pietro, additional, Strahan, Susan E., additional, Streletskiy, Dmitry A., additional, Surendran, Divya E., additional, Suslova, Anya, additional, Svendby, Tove, additional, Sweet, William, additional, Takahashi, Kiyotoshi, additional, Takemura, Kazuto, additional, Tank, Suzanne E., additional, Taylor, Michael A., additional, Tedesco, Marco, additional, Thackeray, Stephen J., additional, Thiaw, W. M., additional, Thibert, Emmanuel, additional, Thoman, Richard L., additional, Thompson, Andrew F., additional, Thompson, Philip R., additional, Tian-Kunze, Xiangshan, additional, Timmermans, Mary-Louise, additional, Timofeyev, Maxim A., additional, Tobin, Skie, additional, Tømmervik, Hans, additional, Tourpali, Kleareti, additional, Trescilo, Lidia, additional, Tretiakov, Mikhail, additional, Trewin, Blair C., additional, Triñanes, Joaquin A., additional, Trotman, Adrian, additional, Truchelut, Ryan E., additional, Trusel, Luke D., additional, Tye, Mari R., additional, van der A, Ronald, additional, van der Schalie, Robin, additional, van der Schrier, Gerard, additional, Van Hemert, Caroline, additional, Van Meerbeeck, Cedric J., additional, van vliet, Arnold J.H., additional, Vazife, Ahad, additional, Verburg, Piet, additional, Vernier, Jean-Paul, additional, Vimont, Isaac J., additional, Virts, Katrina, additional, Vivero, Sebastián, additional, Volkov, Denis L., additional, Vömel, Holger, additional, Vose, Russell S., additional, Walker, Donald (Skip) A., additional, Walsh, John E., additional, Wang, Bin, additional, Wang, Hui, additional, Wang, Muyin, additional, Wang, Ray H. J., additional, Wang, Xinyue, additional, Wanninkhof, Rik, additional, Warnock, Taran, additional, Weber, Mark, additional, Webster, Melinda, additional, Wehrlé, Adrian, additional, Wen, Caihong, additional, Westberry, Toby K., additional, Widlansky, Matthew J., additional, Wiese, David N., additional, Wild, Jeannette D., additional, Wille, Jonathan D., additional, Willems, An, additional, Willett, Kate M., additional, Williams, Earle, additional, Willis, J., additional, Wong, Takmeng, additional, Wood, Kimberly M., additional, Woolway, Richard Iestyn, additional, Xie, Ping-Ping, additional, Yang, Daqing, additional, Yin, Xungang, additional, Yin, Ziqi, additional, Zeng, Zhenzhong, additional, Zhang, Huai-min, additional, Zhang, Li, additional, Zhang, Peiqun, additional, Zhao, Lin, additional, Zhou, Xinjia, additional, Zhu, Zhiwei, additional, Ziemke, Jerry R., additional, Ziese, Markus, additional, Zolkos, Scott, additional, Zotta, Ruxandra M., additional, Zou, Cheng-Zhi, additional, Allen, Jessicca, additional, Camper, Amy V., additional, Haley, Bridgette O., additional, Hammer, Gregory, additional, Love-Brotak, S. Elizabeth, additional, Ohlmann, Laura, additional, Noguchi, Lukas, additional, Riddle, Deborah B., additional, and Veasey, Sara W., additional

Published
2023
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30. Global Climate

Author

Dunn, Robert J. H., primary, Miller, John B., additional, Willett, Kate M., additional, Gobron, Nadine, additional, Ades, Melanie, additional, Adler, Robert, additional, Alexe, Mihai, additional, Allan, Richard P., additional, Anderson, John, additional, Anneville, Orlane, additional, Aono, Yasuyuki, additional, Arguez, Anthony, additional, Arosio, Carlo, additional, Augustine, John A., additional, Azorin-Molina, Cesar, additional, Barichivich, Jonathan, additional, Barnes, John E., additional, Beck, Hylke E., additional, Bellouin, Nicolas, additional, Benedetti, Angela, additional, Blagrave, Kevin, additional, Blenkinsop, Stephen, additional, Bock, Olivier, additional, Bodin, Xavier, additional, Bosilovich, Michael, additional, Boucher, Olivier, additional, Buechler, Dennis, additional, Buehler, Stefan A., additional, Campos, Diego, additional, Carrea, Laura, additional, Chang, Kai-Lan, additional, Christiansen, Hanne H., additional, Christy, John R., additional, Chung, Eui-Seok, additional, Ciasto, Laura M., additional, Clingan, Scott, additional, Coldewey-Egbers, Melanie, additional, Cooper, Owen R., additional, Cornes, Richard C., additional, Covey, Curt, additional, Créatux, Jean-François, additional, Crimmins, Theresa, additional, Cropper, Thomas, additional, Crotwell, Molly, additional, Culpepper, Joshua, additional, Cusicanqui, Diego, additional, Davis, Sean M., additional, de Jeu, Richard A. M., additional, Degenstein, Doug, additional, Delaloye, Reynald, additional, Dokulil, Martin T., additional, Donat, Markus G., additional, Dorigo, Wouter A., additional, Dugan, Hilary A., additional, Durre, Imke, additional, Dutton, Geoff, additional, Duveiller, Gregory, additional, Estilow, Thomas W., additional, Estrella, Nicole, additional, Fereday, David, additional, Fioletov, Vitali E., additional, Flemming, Johannes, additional, Foster, Michael J., additional, Franz, Bryan, additional, Frith, Stacey M., additional, Froidevaux, Lucien, additional, Füllekrug, Martin, additional, Garforth, Judith, additional, Garg, Jay, additional, Gibbes, Badin, additional, Goodman, Steven, additional, Goto, Atsushi, additional, Gruber, Alexander, additional, Gu, Guojun, additional, Hahn, Sebastian, additional, Haimberger, Leopold, additional, Hall, Bradley D., additional, Harris, Ian, additional, Hemming, Deborah L., additional, Hirschi, Martin, additional, Ho, Shu-peng, additional, Holzworth, Robert, additional, Hrbáček, Filip, additional, Hu, Guojie, additional, Hurst, Dale F., additional, Inness, Antje, additional, Isaksen, Ketil, additional, John, Viju O., additional, Jones, Philip D., additional, Junod, Robert, additional, Kääb, Andreas, additional, Kaiser, Johannes W., additional, Kaufmann, Viktor, additional, Kellerer-Pirklbauer, Andreas, additional, Kent, Elizabeth C., additional, Kidd, Richard, additional, Kipling, Zak, additional, Koppa, Akash, additional, Kraemer, Benjamin M., additional, Kramarova, Natalya, additional, Kruger, Andries, additional, La Fuente, Sofia, additional, Laas, Alo, additional, Lan, Xin, additional, Lang, Timothy, additional, Lantz, Kathleen O., additional, Lavers, David A., additional, Leblanc, Thierry, additional, Leibensperger, Eric M., additional, Lennard, Chris, additional, Liu, Yakun, additional, Loeb, Norman G., additional, Loyola, Diego, additional, Maberly, Stephen C., additional, Madelon, Remi, additional, Magnin, Florence, additional, Matsuzaki, Shin-Ichiro, additional, May, Linda, additional, Mayer, Michael, additional, McCabe, Matthew F., additional, McVicar, Tim R., additional, Mears, Carl A., additional, Menzel, Annette, additional, Merchant, Christopher J., additional, Meyer, Michael F., additional, Miralles, Diego G., additional, Moesinger, Leander, additional, Monet, Ghislaine, additional, Montzka, Stephan A., additional, Morice, Colin, additional, Mrekaj, Ivan, additional, Mühle, Jens, additional, Nance, David, additional, Nicolas, Julien P., additional, Noetzli, Jeannette, additional, Noll, Ben, additional, O’Keefe, John, additional, Osborn, Timothy J., additional, Park, Taejin, additional, Parrington, Mark, additional, Pellet, Cécile, additional, Pelto, Mauri S., additional, Petersen, Kyle, additional, Phillips, Coda, additional, Pierson, Don, additional, Pinto, Izidine, additional, Po-Chedley, Stephen, additional, Pogliotti, Paolo, additional, Polvani, Lorenzo, additional, Preimesberger, Wolfgang, additional, Price, Colin, additional, Pulkkanen, Merja, additional, Randel, William J., additional, Rémy, Samuel, additional, Ricciardulli, Lucrezia, additional, Richardson, Andrew D., additional, Robinson, David A., additional, Rocha, Willy, additional, Rodell, Matthew, additional, Rodriguez-Fernandez, Nemesio, additional, Rosenlof, Karen H., additional, Rozanov, Alexei, additional, Rozkošný, Jozef, additional, Rusanovskaya, Olga O., additional, Rutishauser, This, additional, Sabeerali, C. T., additional, Sánchez-Lugo, Ahira, additional, Sawaengphokhai, Parnchai, additional, Schenzinger, Verena, additional, Schlegel, Robert W., additional, Schmid, Martin, additional, Schneider, Udo, additional, Sezaki, Fumi, additional, Sharma, Sapna, additional, Shi, Lei, additional, Shimaraeva, Svetlana V., additional, Silow, Eugene A., additional, Simmons, Adrian J., additional, Smith, Sharon L., additional, Soden, Brian J., additional, Sofieva, Viktoria, additional, Sparks, Tim H., additional, Sreejith, O.P., additional, Stackhouse, Paul W., additional, Stauffer, Ryan, additional, Steinbrecht, Wolfgang, additional, Steiner, Andrea K., additional, Stradiotti, Pietro, additional, Streletskiy, Dmitry A., additional, Surendran, Divya E., additional, Thackeray, Stephen J., additional, Thibert, Emmanuel, additional, Timofeyev, Maxim A., additional, Tourpali, Kleareti, additional, Tye, Mari R., additional, van der A, Ronald, additional, van der Schalie, Robin, additional, van der Schrier, Gerard, additional, van Vliet, Arnold J.H., additional, Verburg, Piet, additional, Vernier, Jean-Paul, additional, Vimont, Isaac J., additional, Virts, Katrina, additional, Vivero, Sebastián, additional, Vömel, Holger, additional, Vose, Russell S., additional, Wang, Ray H. J., additional, Wang, Xinyue, additional, Warnock, Taran, additional, Weber, Mark, additional, Wiese, David N., additional, Wild, Jeannette D., additional, Williams, Earle, additional, Wong, Takmeng, additional, Woolway, Richard Iestyn, additional, Yin, Xungang, additional, Zeng, Zhenzhong, additional, Zhao, Lin, additional, Zhou, Xinjia, additional, Ziemke, Jerry R., additional, Ziese, Markus, additional, Zotta, Ruxandra M., additional, Zou, Cheng-Zhi, additional, Allen, Jessicca, additional, Camper, Amy V., additional, Haley, Bridgette O., additional, Hammer, Gregory, additional, Love-Brotak, S. Elizabeth, additional, Ohlmann, Laura, additional, Noguchi, Lukas, additional, Riddle, Deborah B., additional, and Veasey, Sara W., additional

Published
2023
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32. Global, regional, and national prevalence of overweight and obesity in children and adults during 1980–2013: a systematic analysis for the Global Burden of Disease Study 2013

Author

Ng, Marie, Fleming, Tom, Robinson, Margaret, Thomson, Blake, Graetz, Nicholas, Margono, Christopher, Mullany, Erin C, Biryukov, Stan, Abbafati, Cristiana, Abera, Semaw Ferede, Abraham, Jerry P, Abu-Rmeileh, Niveen ME, Achoki, Tom, AlBuhairan, Fadia S, Alemu, Zewdie A, Alfonso, Rafael, Ali, Mohammed K, Ali, Raghib, Guzman, Nelson Alvis, Ammar, Walid, Anwari, Palwasha, Banerjee, Amitava, Barquera, Simon, Basu, Sanjay, Bennett, Derrick A, Bhutta, Zulfiqar, Blore, Jed, Cabral, Norberto, Nonato, Ismael Campos, Chang, Jung-Chen, Chowdhury, Rajiv, Courville, Karen J, Criqui, Michael H, Cundiff, David K, Dabhadkar, Kaustubh C, Dandona, Lalit, Davis, Adrian, Dayama, Anand, Dharmaratne, Samath D, Ding, Eric L, Durrani, Adnan M, Esteghamati, Alireza, Farzadfar, Farshad, Fay, Derek FJ, Feigin, Valery L, Flaxman, Abraham, Forouzanfar, Mohammad H, Goto, Atsushi, Green, Mark A, Gupta, Rajeev, Hafezi-Nejad, Nima, Hankey, Graeme J, Harewood, Heather C, Havmoeller, Rasmus, Hay, Simon, Hernandez, Lucia, Husseini, Abdullatif, Idrisov, Bulat T, Ikeda, Nayu, Islami, Farhad, Jahangir, Eiman, Jassal, Simerjot K, Jee, Sun Ha, Jeffreys, Mona, Jonas, Jost B, Kabagambe, Edmond K, Khalifa, Shams Eldin Ali Hassan, Kengne, Andre Pascal, Khader, Yousef Saleh, Khang, Young-Ho, Kim, Daniel, Kimokoti, Ruth W, Kinge, Jonas M, Kokubo, Yoshihiro, Kosen, Soewarta, Kwan, Gene, Lai, Taavi, Leinsalu, Mall, Li, Yichong, Liang, Xiaofeng, Liu, Shiwei, Logroscino, Giancarlo, Lotufo, Paulo A, Lu, Yuan, Ma, Jixiang, Mainoo, Nana Kwaku, Mensah, George A, Merriman, Tony R, Mokdad, Ali H, Moschandreas, Joanna, Naghavi, Mohsen, Naheed, Aliya, Nand, Devina, Narayan, KM Venkat, Nelson, Erica Leigh, Neuhouser, Marian L, Nisar, Muhammad Imran, Ohkubo, Takayoshi, Oti, Samuel O, and Pedroza, Andrea

Subjects
Pediatric, Prevention, Obesity, Nutrition, 3.1 Primary prevention interventions to modify behaviours or promote wellbeing, Aetiology, Prevention of disease and conditions, and promotion of well-being, 2.4 Surveillance and distribution, Metabolic and endocrine, Stroke, Good Health and Well Being, Adolescent, Adult, Child, Cost of Illness, Female, Humans, Male, Models, Theoretical, Overweight, Prevalence, Regression Analysis, Medical and Health Sciences, General & Internal Medicine
Abstract

BackgroundIn 2010, overweight and obesity were estimated to cause 3·4 million deaths, 3·9% of years of life lost, and 3·8% of disability-adjusted life-years (DALYs) worldwide. The rise in obesity has led to widespread calls for regular monitoring of changes in overweight and obesity prevalence in all populations. Comparable, up-to-date information about levels and trends is essential to quantify population health effects and to prompt decision makers to prioritise action. We estimate the global, regional, and national prevalence of overweight and obesity in children and adults during 1980-2013.MethodsWe systematically identified surveys, reports, and published studies (n=1769) that included data for height and weight, both through physical measurements and self-reports. We used mixed effects linear regression to correct for bias in self-reports. We obtained data for prevalence of obesity and overweight by age, sex, country, and year (n=19,244) with a spatiotemporal Gaussian process regression model to estimate prevalence with 95% uncertainty intervals (UIs).FindingsWorldwide, the proportion of adults with a body-mass index (BMI) of 25 kg/m(2) or greater increased between 1980 and 2013 from 28·8% (95% UI 28·4-29·3) to 36·9% (36·3-37·4) in men, and from 29·8% (29·3-30·2) to 38·0% (37·5-38·5) in women. Prevalence has increased substantially in children and adolescents in developed countries; 23·8% (22·9-24·7) of boys and 22·6% (21·7-23·6) of girls were overweight or obese in 2013. The prevalence of overweight and obesity has also increased in children and adolescents in developing countries, from 8·1% (7·7-8·6) to 12·9% (12·3-13·5) in 2013 for boys and from 8·4% (8·1-8·8) to 13·4% (13·0-13·9) in girls. In adults, estimated prevalence of obesity exceeded 50% in men in Tonga and in women in Kuwait, Kiribati, Federated States of Micronesia, Libya, Qatar, Tonga, and Samoa. Since 2006, the increase in adult obesity in developed countries has slowed down.InterpretationBecause of the established health risks and substantial increases in prevalence, obesity has become a major global health challenge. Not only is obesity increasing, but no national success stories have been reported in the past 33 years. Urgent global action and leadership is needed to help countries to more effectively intervene.FundingBill & Melinda Gates Foundation.

Published
2014

33. NMR study of thermally activated paramagnetism in metallic low-silica X zeolite filled with sodium atoms

Author

Igarashi, Mutsuo, Nakano, Takehito, Thi, Pham Tan, Nozue, Yasuo, Goto, Atsushi, Hashi, Kenjiro, Ohki, Shinobu, Shimizu, Tadashi, Krajnc, Andraž, Jeglič, Peter, and Arčon, Denis

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

We report a \^{23}Na and \^{27}Al nuclear magnetic resonance (NMR) investigation of low-silica X (LSX) zeolite with chemical formula Na_{12}Al_{12}Si_{12}O_{48} (Na_{12}-LSX) loaded with n additional guest sodium atoms. Na_{n}/Na_{12}-LSX exhibits an insulator-to-metal transition around n=11.6, which is accompanied by a significant enhancement of bulk magnetic susceptibility. Paramagnetic moments are thermally activated in the metallic Na_{12}/Na_{12}-LSX with an activation energy of around 0.1 eV. At the same time, a new shifted component (SC) appears in the \^{23}Na NMR, whose large and positive NMR shift scales with bulk magnetic susceptibility. Its spin-lattice relaxation rate 1/T_{1} is governed by the fluctuations determined by the same activation energy as obtained from the bulk magnetic susceptibility data. The timescale of these fluctuations is typical for atomic motions, which suggest strong electron-phonon coupling, a hallmark of polaron states. The insulator-to-metal transition in Na_{n}/Na_{12}-LSX is thus discussed within a polaron model., Comment: 7 pages, 6 figures

Published
2012
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36. Impact of COVID ‐19 pandemic on behavioral changes and glycemic control and a survey of telemedicine in patients with diabetes: A multicenter retrospective observational study

Author

Bouchi, Ryotaro, primary, Sugiyama, Takehiro, additional, Goto, Atsushi, additional, Ohsugi, Mitsuru, additional, Yoshioka, Narihito, additional, Katagiri, Hideki, additional, Mita, Tomoya, additional, Hirota, Yushi, additional, Ikegami, Hiroshi, additional, Matsuhisa, Munehide, additional, Araki, Eiichi, additional, Yokoyama, Hiroki, additional, Minami, Masae, additional, Yamazaki, Katsuya, additional, Jinnouchi, Hideaki, additional, Ikeda, Hiroki, additional, Fujii, Hitomi, additional, Nogawa, Miyuki, additional, Kaneshige, Masahiro, additional, Miyo, Kengo, additional, and Ueki, Kohjiro, additional

Published
2023
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37. Surface-sensitive NMR in optically pumped semiconductors

Author

Goto, Atsushi, Shimizu, Tadashi, Hashi, Kenjiro, and Ohki, Shinobu

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

We present a scheme of surface-sensitive nuclear magnetic resonance in optically pumped semiconductors, where an NMR signal from a part of the surface of a bulk compound semiconductor is detected apart from the bulk signal. It utilizes optically oriented nuclei with a long spin-lattice relaxation time as a polarization reservoir for the second (target) nuclei to be detected. It provides a basis for the nuclear spin polarizer [IEEE Trans. Appl. Supercond. 14, 1635 (2004)], which is a polarization reservoir at a surface of the optically pumped semiconductor that polarizes nuclear spins in a target material in contact through the nanostructured interfaces., Comment: 4 pages, 5 figures

Published
2008
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38. Dynamics of the electron-nuclear and heteronuclear polarization transfers in optically-oriented semi-insulating InP:Fe

Author

Goto, Atsushi, Hashi, Kenjiro, Shimizu, Tadashi, and Ohki, Shinobu

Subjects
Condensed Matter - Materials Science
Abstract

Dynamics of the electron-nuclear and heteronuclear polarization-transfer processes in the optically oriented semi-insulating iron-doped indium phosphide were investigated through the characteristic time scales of the processes. (1) We find in the optical nuclear orientation process that the buildup times for 31P and 115In nuclear polarizations are of the same order. From the analysis of the cross-relaxation process between photo-excited electrons and nuclei, it is concluded that electron-nuclear dipolar-couplings are responsible for the polarization transfer in this case. This example shows that the nuclear-site dependence of the buildup time can be utilized to identify hyperfine couplings responsible for the process. (2) We find in the heteronuclear polarization transfer (cross polarization) process between optically oriented 31P and 115In that the cross-relaxation time is rather short; it is an order of magnitude shorter than that expected for nuclear dipolar couplings when a magnetic field is applied parallel to the crystalline [100] axis. From the cross polarization spectral density analysis, it is concluded that a large J-coupling of the order of 2 kHz exists between these nuclei and that its angular dependence is not of a simple pseudo-dipolar type., Comment: 7 pages, 4 figures, submitted to Physical Review B

Published
2008
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39. Optical pumping NMR in the compensated semiconductor InP:Fe

Author

Goto, Atsushi, Hashi, Kenjiro, Shimizu, Tadashi, Miyabe, Ryo, Wen, Xiaogang, Ohki, Shinobu, Machida, Susumu, Iijima, Takahiro, and Kido, Giyuu

Subjects
Condensed Matter
Abstract

The optical pumping NMR effect in the compensated semiconductor InP:Fe has been investigated in terms of the dependences of photon energy (E_p), helicity (sigma+-), and exposure time (tau_L) of infrared lights. The {31}P and {115}In signal enhancements show large sigma+- asymmetries and anomalous oscillations as a function of E_p. We find that (i) the oscillation period as a function of E_p is similar for {31}P and {115}In and almost field independent in spite of significant reduction of the enhancement in higher fields. (ii) A characteristic time for buildup of the {31}P polarization under the light exposure shows strong E_p-dependence, but is almost independent of sigma+-. (iii) The buildup times for {31}P and {115}In are of the same order (10^3 s), although the spin-lattice relaxation times (T_1) are different by more than three orders of magnitude between them. The results are discussed in terms of (1) discrete energy spectra due to donor-acceptor pairs (DAPs) in compensated semiconductors, and (2) interplay between {31}P and dipolar ordered indium nuclei, which are optically induced., Comment: 8 pages, 6 figures, submitted to Physical Review B

Published
2003
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40. A switchable controlled-NOT gate in a spin-chain NMR quantum computer

Author

Goto, Atsushi, Shimizu, Tadashi, Hashi, Kenjiro, and Kitazawa, Hideaki

Subjects
Quantum Physics, Condensed Matter - Strongly Correlated Electrons
Abstract

A method of switching a controlled-NOT gate in a solid-stae NMR quantum computer is presented. Qubits of I=1/2 nuclear spins are placed periodically along a quantum spin chain (1-D antiferromagnet) having a singlet ground state with a finite spin gap to the lowest excited state caused by some quantum effect. Irradiation of a microwave tuned to the spin gap energy excites a packet of triplet magnons at a specific part of the chain where control and target qubits are involved. The packet switches on the Suhl-Nakamura interaction between the qubits, which serves as a controlled NOT gate. The qubit initialization is achieved by a qubit initializer consisting of semiconducting sheets attached to the spin chain, where spin polarizations created by the optical pumping method in the semiconductors are transferred to the spin chain. The scheme allows us to separate the initialization process from the computation, so that one can optimize the computation part without being restricted by the initialization scheme, which provides us with a wide selection of materials for a quantum computer., Comment: 8 pages, 5 figures

Published
2002
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41. Magnon-mediated NMR quantum gates in a 1-D antiferromagnet

Author

Goto, Atsushi, Shimizu, Tadashi, and Hashi, Kenjiro

Subjects
Quantum Physics, Condensed Matter - Strongly Correlated Electrons
Abstract

We propose a method of controlling a quantum logic gate in a solid-state NMR quantum computer. A switchable inter-qubit coupling can be generated by using the longitudinal component of the Suhl-Nakamura interaction induced by a local singlet-triplet excitation in a 1-D antiferromagnet with a spin gap., Comment: 3 pages, 3 figures

Published
2002
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42. Origin for the enhanced copper spin echo decay rate in the pseudogap regime of the multilayer high-T_c cuprates

Author

Goto, Atsushi, Clark, W. G., Vonlanthen, Patrik, Tanaka, Kenji B., Shimizu, Tadashi, Hashi, Kenjiro, Sastry, P. V. P. S. S., and Schwartz, Justin

Subjects
Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Superconductivity
Abstract

We report measurements of the anisotropy of the spin echo decay for the inner layer Cu site of the triple layer cuprate, Hg_0.8Re_0.2Ba_2Ca_2Cu_3O_8 (T_c=126 K) in the pseudogap T regime below T_pg ~ 170 K and the corresponding analysis for their interpretation. As the field alignment is varied, the shape of the decay curve changes from Gaussian (H_0 \parallel c) to single exponential (H_0 \perp c). The latter characterizes the decay caused by the fluctuations of adjacent Cu nuclear spins caused by their interactions with electron spins. The angular dependence of the second moment (T_{2M}^{-2} \equiv <\Delta \omega^2>) deduced from the decay curves indicates that T_{2M}^{-2} for H_0 \parallel c, which is identical to T_{2G}^{-2} (T_{2G} is the Gaussian component), is substantially enhanced, as seen in the pseudogap regime of the bilayer systems. Comparison of T_{2M}^{-2} between H_0 \parallel c and H_0 \perp c indicates that this enhancement is caused by electron spin correlations between the inner and the outer CuO_2 layers. These results provide the answer to the long-standing controversy regarding the opposite T dependences of (T_1T)^{-1} and T_{2G}^{-2} in the pseudogap regime of bi- and trilayer systems., Comment: 4 pages, 4 figures

Published
2002
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43. High Magnetic Field NMR Studies of LiVGe$_2$O$_6$, a quasi 1-D Spin $S = 1$ System

Author

Vonlanthen, P., Tanaka, K. B., Goto, Atsushi, Clark, W. G., Millet, P., Henry, J. Y., Gavilano, J. L., Ott, H. R., Mila, F., Berthier, C., Horvatic, M., Tokunaga, Yo, Kuhns, P., Reyes, A. P., and Moulton, W. G.

Subjects
Condensed Matter
Abstract

We report $^{7}$Li pulsed NMR measurements in polycrystalline and single crystal samples of the quasi one-dimensional S=1 antiferromagnet LiVGe$_2$O$_6$, whose AF transition temperature is $T_{\text{N}}\simeq 24.5$ K. The field ($B_0$) and temperature ($T$) ranges covered were 9-44.5 T and 1.7-300 K respectively. The measurements included NMR spectra, the spin-lattice relaxation rate ($T_1^{-1}$), and the spin-phase relaxation rate ($T_2^{-1}$), often as a function of the orientation of the field relative to the crystal axes. The spectra indicate an AF magnetic structure consistent with that obtained from neutron diffraction measurements, but with the moments aligned parallel to the c-axis. The spectra also provide the $T$-dependence of the AF order parameter and show that the transition is either second order or weakly first order. Both the spectra and the $T_1^{-1}$ data show that $B_0$ has at most a small effect on the alignment of the AF moment. There is no spin-flop transition up to 44.5 T. These features indicate a very large magnetic anisotropy energy in LiVGe$_2$O$_6$ with orbital degrees of freedom playing an important role. Below 8 K, $T_1^{-1}$ varies substantially with the orientation of $B_0$ in the plane perpendicular to the c-axis, suggesting a small energy gap for magnetic fluctuations that is very anisotropic., Comment: submitted to Phys. Rev. B

Published
2001
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48. Zigzag Charge Ordering in alpha'-NaV2O5

Author

Ohama, Tetsuo, Goto, Atsushi, Shimizu, Tadashi, Ninomiya, Emi, Sawa, Hiroshi, Isobe, Masahiko, and Ueda, Yutaka

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

23Na NMR spectrum measurements in alpha'-NaV2O5 with a single- crystalline sample are reported. In the charge-ordered phase, the number of inequivalent Na sites observed is more than that expected from the low-temperature structures of space group Fmm2 reported so far. This disagreement indicates that the real structure including both atomic displacement and charge disproportionation is of lower symmetry. It is suggested that zigzag ordering is the most probable. The temperature variation of the NMR spectra near the transition temperature is incompatible with that of second-order transitions. It is thus concluded that the charge ordering transition is first-order., Comment: 4 pages, 5 eps figures, submitted to J. Phys. Soc. Jpn

Published
2000
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