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Start Over Author "Benhabib S" Topic [phys.cond.cm-s]physics [physics]/condensed matter [cond-mat]/superconductivity [cond-mat.supr-con]
6 results on '"Benhabib S"'

1. Transport signatures of the pseudogap critical point in the cuprate superconductor Bi2Sr2−xLaxCuO6+δ

Author

Lizaire, M., Legros, A., Gourgout, A., Benhabib, S., Badoux, S., Laliberté, F., Boulanger, M.-E., Ataei, A., Grissonnanche, G., Lebøeuf, David, Licciardello, S., Wiedmann, S., Ono, S., Raffy, H., Kawasaki, S., Zheng, G.-q., Doiron-Leyraud, N., Proust, Cyril, Taillefer, L., Laboratoire national des champs magnétiques intenses - Grenoble (LNCMI-G ), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire national des champs magnétiques intenses - Toulouse (LNCMI-T), Institut Quantique [Sherbrooke] (UdeS), Université de Sherbrooke (UdeS), Service de physique de l'état condensé (SPEC - UMR3680), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), High Field Magnet Laboratory (HFML-EMFL), Radboud University [Nijmegen], Central Research Institute of Electric Power Industry, Laboratoire de Physique des Solides (LPS), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Department of Physics, Okayama University, Okayama University, Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences [Beijing] (CAS), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Canadian Institute for Advanced Research (CIFAR), and ANR-19-CE30-0019,neptun,Nouvelles approches du problème des supraconducteurs à haute température(2019)

Subjects
[PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con], Condensed Matter::Superconductivity, Condensed Matter::Strongly Correlated Electrons
Abstract

International audience; Five transport coefficients of the cuprate superconductor Bi 2 Sr 2−x La x CuO 6+δ were measured in the normal state down to low temperature, reached by applying a magnetic field (up to 66 T) large enough to suppress superconductivity. The electrical resistivity, Hall coefficient, thermal conductivity, Seebeck coefficient, and thermal Hall conductivity were measured in two overdoped single crystals, with La concentration x = 0.2 (T c = 18 K) and x = 0.0 (T c = 10 K). The samples have dopings p very close to the critical doping p where the pseudogap phase ends. The resistivity displays a linear dependence on temperature whose slope is consistent with Planckian dissipation. The Hall number n H decreases with reduced p, consistent with a drop in carrier density from n = 1 + p above p to n = p below p. This drop in n H is concomitant with a sharp drop in the density of states inferred from prior NMR Knight shift measurements. The thermal conductivity satisfies the Wiedemann-Franz law, showing that the pseudogap phase at T = 0 is a metal whose fermionic excitations carry heat and charge as do conventional electrons. The Seebeck coefficient diverges logarithmically at low temperature, a signature of quantum criticality. The thermal Hall conductivity becomes negative at low temperature, showing that phonons are chiral in the pseudogap phase. Given the observation of these same properties in other, very different cuprates, our study provides strong evidence for the universality of these five signatures of the pseudogap phase and its critical point.

Published
2021
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2. Evidence for interplay between pseudogap and orthorhombicity in underdoped YBa$_2$Cu$_3$O$_y$ from ultrasound measurement

Author

Frachet, M., Campbell, D. J., Missiaen, A., Benhabib, S., Laliberté, F., Borgnic, B., Loew, T., Porras, J., Nakata, S., Keimer, B., Tacon, M. Le, Proust, Cyril, Paul, Indranil, Leboeuf, David, Laboratoire national des champs magnétiques intenses - Toulouse (LNCMI-T), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and Laboratoire national des champs magnétiques intenses - Grenoble (LNCMI-G )

Subjects
[PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con], Condensed Matter::Superconductivity, Condensed Matter::Strongly Correlated Electrons
Abstract

Using ultrasound measurements on detwinned single crystals of underdoped YBa$_2$Cu$_3$O$_y$ (YBCO) we study the hole doping ($p$) evolution of the thermodynamic anisotropy obtained by comparing the strain dependence of superconducting $T_{\rm c}$ along the $a$ and $b$ crystallographic directions. While the structural orthorhombicity of YBCO reduces monotonically with decreasing $p

Published
2021

3. Effect of pseudogap on electronic anisotropy in the strain dependence of the superconducting $T_c$ of underdoped YBa$_2$Cu$_3$O$_y$

Author

Frachet, M., Campbell, D. J., Missiaen, A., Benhabib, S., Laliberté, F., Borgnic, B., Loew, T., Porras, J., Nakata, S., Keimer, B., Tacon, M. Le, Proust, Cyril, Paul, Indranil, Leboeuf, David, Laboratoire national des champs magnétiques intenses - Toulouse (LNCMI-T), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire national des champs magnétiques intenses - Grenoble (LNCMI-G ), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and ANR-19-CE30-0019,neptun,Nouvelles approches du problème des supraconducteurs à haute température(2019)

Subjects
[PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con], Superconductivity (cond-mat.supr-con), Condensed Matter::Materials Science, Condensed Matter - Strongly Correlated Electrons, Strongly Correlated Electrons (cond-mat.str-el), Condensed Matter::Superconductivity, Condensed Matter - Superconductivity, FOS: Physical sciences, Condensed Matter::Strongly Correlated Electrons
Abstract

For orthorhombic superconductors we define thermodynamic anisotropy $N \equiv d T_c/d \epsilon_{22} - dT_c/d \epsilon_{11}$ as the difference in how superconducting $T_c$ varies with strains $\epsilon_{ii}$, $i=(1, 2)$, along the in-plane directions. We study the hole doping ($p$) dependence of $N$ on detwinned single crystals of underdoped YBa$_2$Cu$_3$O$_y$ (YBCO) using ultrasound technique. While the structural orthorhombicity of YBCO reduces monotonically with decreasing doping over $0.065

Published
2021
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4. Transport signatures of the pseudogap critical point in the cuprate superconductor Bi 2 Sr 2−x La x CuO 6+δ

Author

Boulanger, M. -E., Zheng, G. -Q., Lizaire, M., Legros, A., Gourgout, A., Benhabib, S., Badoux, Sven, Laliberté, F., Boulanger, M.-E, Ataei, A., Grissonnanche, G., Leboeuf, D., Licciardello, S., Wiedmann, S., Ono, S., Kawasaki, S., Zheng, G.-Q, Doiron-Leyraud, N., Proust, C., Taillefer, L., Laboratoire national des champs magnétiques intenses - Grenoble (LNCMI-G ), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées

Subjects
[PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con], Condensed Matter::Superconductivity, [PHYS.COND.CM-SCE]Physics [physics]/Condensed Matter [cond-mat]/Strongly Correlated Electrons [cond-mat.str-el]
Abstract

Four transport coefficients of the cuprate superconductor Bi$_2$Sr$_{2-x}$La$_x$CuO$_{6+\delta}$ were measured in the normal state down to low temperature, achieved by applying a magnetic field (up to 66T) large enough to fully suppress superconductivity. The electrical resistivity, Hall coefficient, thermal conductivity and Seebeck coefficient were measured in two overdoped single crystals, with La concentration $x = 0.2$ ($T_{\rm c}=18$K) and $x = 0.0$ ($T_{\rm c}=10$K). The samples have dopings $p$ very close to the critical doping $p^{\star}$ where the pseudogap phase ends. The resistivity of the sample closest to $p^{\star}$ displays a linear dependence on temperature whose slope is consistent with Planckian dissipation. The Hall number decreases with reduced $p$, consistent with a drop in carrier density from $n = 1+p$ above $p^{\star}$ to $n=p$ below $p^{\star}$. The thermal conductivity satisfies the Wiedemann-Franz law, showing that the pseudogap phase at $T = 0$ is a metal whose fermionic excitations carry heat and charge as do conventional electrons. The Seebeck coefficient diverges logarithmically at low temperature, a signature of quantum criticality. Given the observation of these same properties in other, very different cuprates, our study provides strong evidence for the universality of these four signatures of the pseudogap critical point.

Published
2020

5. High magnetic field ultrasound study of spin freezing in La$_{1.88}$Sr$_{0.12}$CuO$_4$

Author

Frachet, M, Benhabib, S, Vinograd, I, Wu, S -F, Vignolle, B, Mayaffre, H, Krämer, S, Kurosawa, T, Momono, N, Oda, M, Chang, J, Proust, C, Julien, M -H, LeBoeuf, D, Laboratoire national des champs magnétiques intenses - Grenoble (LNCMI-G ), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire national des champs magnétiques intenses - Toulouse (LNCMI-T), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Department of Physics, Hokkaido University [Sapporo, Japan], Muroran Institute of Technology, Universität Zürich [Zürich] = University of Zurich (UZH), We thank A. Böhmer, I. Paul, and D. Campbell for fruitful discussions, as well as D. Destraz and O. Ivashko for their assistance with sample preparation. Part of this work was performed at the LNCMI, a member of the European Magnetic Field Laboratory (EMFL). Work at the LNCMI was supported by the Laboratoire d'Excellence LANEF (ANR-10-LABX-51-01), French Agence Nationale de la Recherche (ANR) Grant No. ANR-19-CE30-0019-01 (Neptun) and EUR Grant NanoX n∘ANR-17-EURE-0009. Work in Zürich was supported by the Swiss National Science Foundation., ANR-19-CE30-0019,neptun,Nouvelles approches du problème des supraconducteurs à haute température(2019), ANR-17-EURE-0009,NanoX,Science et Ingénierie à l'Echelle Nano(2017), University of Zurich, Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)

Subjects
[PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con], Superconductivity (cond-mat.supr-con), Condensed Matter - Strongly Correlated Electrons, 3104 Condensed Matter Physics, Strongly Correlated Electrons (cond-mat.str-el), 530 Physics, Condensed Matter - Superconductivity, Condensed Matter::Superconductivity, 2504 Electronic, Optical and Magnetic Materials, FOS: Physical sciences, Condensed Matter::Strongly Correlated Electrons, 10192 Physics Institute, [PHYS.COND.CM-SCE]Physics [physics]/Condensed Matter [cond-mat]/Strongly Correlated Electrons [cond-mat.str-el]
Abstract

High-$T_{\rm{c}}$ cuprate superconductors host spin, charge and lattice instabilities. In particular, in the antiferromagnetic glass phase, over a large doping range, lanthanum based cuprates display a glass-like spin freezing with antiferromagnetic correlations. Previously, sound velocity anomalies in La$_{2-x}$Sr$_{x}$CuO$_4$ (LSCO) for hole doping $p\geq 0.145$ were reported and interpreted as arising from a coupling of the lattice to the magnetic glass [Frachet, Vinograd et al., Nat. Phys. 16, 1064-1068 (2020)]. Here we report both sound velocity and attenuation in LSCO $p=0.12$, i.e. at a doping level for which the spin freezing temperature is the highest. Using high magnetic fields and comparing with nuclear magnetic resonance (NMR) measurements, we confirm that the anomalies in the low temperature ultrasound properties of LSCO are produced by a coupling between the lattice and the spin glass. Moreover, we show that both sound velocity and attenuation can be simultaneously accounted for by a simple phenomenological model originally developed for canonical spin glasses. Our results point towards a strong competition between superconductivity and spin freezing, tuned by the magnetic field. A comparison of different acoustic modes suggests that the slow spin fluctuations have a nematic character., Comment: 12 pages, 8 figures

Published
2020
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6. $\eta$ collective mode as A$_{1g}$ Raman resonance in cuprate superconductors

Author

Montiel, X., Kloss, T., Pépin, C., Benhabib, S., Gallais, Y., Sacuto, A., Institut de Physique Théorique - UMR CNRS 3681 (IPHT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire Matériaux et Phénomènes Quantiques (MPQ (UMR_7162)), Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), grant Ph743-12 of the COFECUB, ANR-10-LABX-0039-PALM,LabEx PALM,Laboratoire d’Excellence Physics Atoms Light Mater, ANR-14-CE05-0007,UNESCOS,Etats electroniques non conventionnels et ordres de charge versus suparconductivité(2014), and ANR-10-LABX-0039,PALM,Physics: Atoms, Light, Matter(2010)

Subjects
[PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con], Condensed Matter - Superconductivity, Condensed Matter::Superconductivity, Condensed Matter::Strongly Correlated Electrons
Abstract

We discuss the possible existence a spin singlet excitation with charge $\pm2$ ($\eta$-mode) originating the $A_{1g}$ Raman resonance in cuprate superconductors. This $\eta$-mode relates the $d$-wave superconducting singlet pairing channel to a $d$-wave charge channel. We show that the $\eta$ boson forms a particle-particle bound state below the $2\Delta$ threshold of the particle-hole continuum where $\Delta$ is the maximum $d$-wave gap. Within a generalized random phase approximation and Bethe-Salpether approximation study, we find that this mode has energies similar to the resonance observed by Inelastic Neutron Scattering (INS) below the superconducting (SC) coherent peak at $2\Delta$ in various SC cuprates compounds. We show that it is a very good candidate for the resonance observed in Raman scattering below the $2\Delta$ peak in the $A_{1g}$ symmetry. Since the $\eta$-mode sits in the $S=0$ channel, it may be observable via Raman, X -ray or Electron Energy Loss Spectroscopy probes.

Published
2016
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