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4 results on '"0000-0003-1024-6779"'

1. Lanthanide metal-organic network featuring strong perpendicular magnetic anisotropy

Author

0000-0001-9009-1994, 0000-0002-4499-2561, 0000-0003-2910-7429, 0000-0002-9338-7077, 0000-0002-0632-1636, 0000-0001-7608-2979, 0000-0003-1024-6779, 0000-0002-0585-5636, 0000-0003-1716-0126, 0000-0002-2086-8603, 0000-0002-8661-8295, Parreiras, Sofia O, Moreno, Daniel, Mathialagan, Shanmugasibi K, Muñiz-Cano, Beatriz, Martín-Fuentes, Cristina, Tenorio, María, Černa, Lenka, Urgel, José I, Lauwaet, Koen, Valvidares, Manuel, Valbuena, Miguel A, Gallego, José M., Martínez, José I., Gargiani, Pierluigi, Miranda, Rodolfo, Camarero, Julio, Écija, David, 0000-0001-9009-1994, 0000-0002-4499-2561, 0000-0003-2910-7429, 0000-0002-9338-7077, 0000-0002-0632-1636, 0000-0001-7608-2979, 0000-0003-1024-6779, 0000-0002-0585-5636, 0000-0003-1716-0126, 0000-0002-2086-8603, 0000-0002-8661-8295, Parreiras, Sofia O, Moreno, Daniel, Mathialagan, Shanmugasibi K, Muñiz-Cano, Beatriz, Martín-Fuentes, Cristina, Tenorio, María, Černa, Lenka, Urgel, José I, Lauwaet, Koen, Valvidares, Manuel, Valbuena, Miguel A, Gallego, José M., Martínez, José I., Gargiani, Pierluigi, Miranda, Rodolfo, Camarero, Julio, and Écija, David

Abstract

The coordination of lanthanides atoms in two-dimensional surface-confined metal-organic networks is a promising path to achieve an ordered array of single atom magnets. These networks are highly versatile with plenty of combinations of molecular linkers and metallic atoms. Notably, with an appropriate choice of molecules and lanthanide atoms it should be feasible to tailor the orientation and intensity of the magnetic anisotropy. However, up to now only tilted and almost in-plane easy axis of magnetizations were reported in lanthanide-based architectures. Here we introduce an Er-directed two-dimensional metallosupramolecular network on Cu(111) featuring strong out-of-plane magnetic anisotropy. Our results will contribute to pave avenues for the use of lanthanides in potential applications in nanomagnetism and spintronics.

Published
2023

2. Ultra-thin NaCl films as protective layers for graphene

Author

European Commission, Agencia Estatal de Investigación (España), Ministerio de Economía y Competitividad (España), Comunidad de Madrid, Ministerio de Ciencia, Innovación y Universidades (España), Consejo Superior de Investigaciones Científicas (España), Palacio, Irene [0000-0002-3345-4848], Lauwaet, Koen [0000-0003-1024-6779], Martínez, José I. [0000-0002-2086-8603], Palacio, Irene, Lauwaet, Koen, Vázquez, Luis, Palomares, F. Javier, González-Herrero, Héctor, Martínez, José I., Aballe, Lucía, Foerster, Michael, García-Hernández, Mar, Martín-Gago, José A., European Commission, Agencia Estatal de Investigación (España), Ministerio de Economía y Competitividad (España), Comunidad de Madrid, Ministerio de Ciencia, Innovación y Universidades (España), Consejo Superior de Investigaciones Científicas (España), Palacio, Irene [0000-0002-3345-4848], Lauwaet, Koen [0000-0003-1024-6779], Martínez, José I. [0000-0002-2086-8603], Palacio, Irene, Lauwaet, Koen, Vázquez, Luis, Palomares, F. Javier, González-Herrero, Héctor, Martínez, José I., Aballe, Lucía, Foerster, Michael, García-Hernández, Mar, and Martín-Gago, José A.

Abstract

The ageing of graphene is an important issue for technological applications. Capping layers are a good way of circumventing this problem. In this work, we propose the use of ultra-thin NaCl films as easilyremovable protective layers. We have carried out a detailed characterization of the NaCl/graphene interface on metal substrates, namely Cu(111) and Ir(111), by means of complementary microscopies, electron diffraction and spectroscopic techniques. Interestingly, we show that NaCl neither interacts in a chemical way with graphene nor intercalates through it. We demonstrate that the NaCl film is stable under ambient conditions, protecting the graphene surface from oxidation. In addition, after removing the protective layer, graphene remains intact.

Published
2019

3. Ultra-thin NaCl films as protective layers for graphene

Author

Luis Vázquez, Michael Foerster, Héctor González-Herrero, José I. Martínez, Koen Lauwaet, Irene Palacio, José A. Martín-Gago, Mar García-Hernández, Lucia Aballe, Francisco Palomares, European Commission, Agencia Estatal de Investigación (España), Ministerio de Economía y Competitividad (España), Comunidad de Madrid, Ministerio de Ciencia, Innovación y Universidades (España), Consejo Superior de Investigaciones Científicas (España), Palacio, Irene, Lauwaet, Koen, Martínez, José I., Palacio, Irene [0000-0002-3345-4848], Lauwaet, Koen [0000-0003-1024-6779], and Martínez, José I. [0000-0002-2086-8603]

Subjects
Materials science, Interfaces, Intercalation (chemistry), 02 engineering and technology, Capping layers, 010402 general chemistry, 01 natural sciences, 7. Clean energy, Article, law.invention, Metal, NaCl, law, Microscopy, General Materials Science, Cu(111), Graphene, Ultra-thin films, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Characterization (materials science), Chemical engineering, Electron diffraction, visual_art, visual_art.visual_art_medium, 0210 nano-technology, Layer (electronics)
Abstract

The ageing of graphene is an important issue for technological applications. Capping layers are a good way of circumventing this problem. In this work, we propose the use of ultra-thin NaCl films as easilyremovable protective layers. We have carried out a detailed characterization of the NaCl/graphene interface on metal substrates, namely Cu(111) and Ir(111), by means of complementary microscopies, electron diffraction and spectroscopic techniques. Interestingly, we show that NaCl neither interacts in a chemical way with graphene nor intercalates through it. We demonstrate that the NaCl film is stable under ambient conditions, protecting the graphene surface from oxidation. In addition, after removing the protective layer, graphene remains intact., This work has been supported by the EU Graphene Flagship funding (Grant Graphene Core2 785219), the Spanish MINECO (MAT2017-85089-C2-1R, MAT2016-80394-R and RYC-2015-17730) and the EU via the ERC-Synergy Program (Grant ERC-2013-SYG-610256 NANOCOSMOS) and the European Structural Funds via FotoArt-CM project (P2018/NMT-4367)., We acknowledge support of the publication fee by the CSIC Open Access Support Initiative through its Unit of Information Resources for Research (URICI)

Published
2019

4. Directional picoantenna behavior of tunnel junctions formed by an atomic-scale surface defect.

Author

Mateos D, Jover O, Varea M, Lauwaet K, Granados D, Miranda R, Fernandez-Dominguez AI, Martin-Jimenez A, and Otero R

Abstract

Plasmonic nanoantennas have attracted much attention lately, among other reasons because of the directionality of light emitted by fluorophores coupled to their localized surface plasmon resonances. Plasmonic picocavities, i.e., cavities with mode volumes below 1 nm 3 , could act as enhanced antennas due to their extreme field confinement, but the directionality on their emission is difficult to control. In this work, we show that the plasmonic picocavity formed between the tip of a scanning tunneling microscope and a metal surface with a monoatomic step shows directional emission profiles and, thus, can be considered as a realization of a picoantenna. Electromagnetic calculations demonstrate that the observed directionality arises from the reshaping and tilting of the surface charges induced at the scanning tip due to the atomic step. Our results pave the way to exploiting picoantennas as an efficient way for the far-field probing and control of light-matter interactions below the nanoscale.

Published
2024
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