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1.
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10 p, 5.6 MB |
Experimental Demonstration of a Magnetically Induced Warping Transition in a Topological Insulator Mediated by Rare-Earth Surface Dopants
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Muñiz Cano, Beatriz (IMDEA Nanociencia) ;
Ferreiros, Yago (IMDEA Nanociencia) ;
Pantaleón, Pierre A. (IMDEA Nanociencia) ;
Dai, Ji (ALBA Laboratori de Llum de Sincrotró) ;
Tallarida, Massimo (ALBA Laboratori de Llum de Sincrotró) ;
Figueroa García, Adriana Isabel (Institut Català de Nanociència i Nanotecnologia) ;
Marinova, Vera (Institute of Optical Materials and Technologies Acad. G. Bontchev) ;
García-Díez, Kevin (Institut Català de Nanociència i Nanotecnologia) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ;
Valenzuela, Sergio O. (Institut Català de Nanociència i Nanotecnologia) ;
Miranda, Rodolfo (Universidad Autónoma de Madrid) ;
Camarero, Julio (Universidad Autónoma de Madrid. Departamento de Física de la Materia Condensada) ;
Guinea, Francisco (IMDEA Nanociencia) ;
Silva-Guillén, Jose Angel (IMDEA Nanociencia) ;
Valbuena, Miguel Ángel (IMDEA Nanociencia)
Magnetic topological insulators constitute a novel class of materials whose topological surface states (TSSs) coexist with long-range ferromagnetic order, eventually breaking time-reversal symmetry. The subsequent bandgap opening is predicted to co-occur with a distortion of the TSS warped shape from hexagonal to trigonal. [...]
2023 -  10.1021/acs.nanolett.3c00587
Nano letters, Vol. 23, Issue 13 (July 2023) , p. 6249-6258
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2.
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11 p, 1.8 MB |
Tuning the magnetic anisotropy of lanthanides on a metal substrate by metal-organic coordination
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Parreiras, Sofia de Oliveira (Instituto Madrileño de Estudios Avanzados en Nanociencia) ;
Moreno, Daniel (Instituto Madrileño de Estudios Avanzados en Nanociencia) ;
Cirera, Borja (Instituto Madrileño de Estudios Avanzados en Nanociencia) ;
Valbuena, Miguel Ángel (Institut Català de Nanociència i Nanotecnologia) ;
Urgel, José I. (Instituto Madrileño de Estudios Avanzados en Nanociencia) ;
Paradinas Aranjuelo, Marcos (Institut Català de Nanociència i Nanotecnologia) ;
Panighel, Mirco (Institut Català de Nanociència i Nanotecnologia) ;
Ajejas, Fernando (Instituto Madrileño de Estudios Avanzados en Nanociencia) ;
Niño, Miguel A. (Instituto Madrileño de Estudios Avanzados en Nanociencia) ;
Gallego, José Maria (Instituto de Ciencia de Materiales de Madrid) ;
Valvidares, Manuel (ALBA Laboratori de Llum de Sincrotró) ;
Gargiani, Pierluigi (ALBA Laboratori de Llum de Sincrotró) ;
Kuch, Wolfgang (Freie Universität Berlin. Institut für Experimentalphysik) ;
Martínez, José I. (Instituto de Ciencia de Materiales de Madrid) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ;
Camarero, Julio (Universidad Autónoma de Madrid. Departamento de Física de la Materia Condensada) ;
Miranda, Rodolfo (Universidad Autónoma de Madrid. Departamento de Física de la Materia Condensada) ;
Perna, Paolo (Instituto Madrileño de Estudios Avanzados en Nanociencia) ;
Écija, David (Instituto Madrileño de Estudios Avanzados en Nanociencia)
Taming the magnetic anisotropy of lanthanides through coordination environments is crucial to take advantage of the lanthanides properties in thermally robust nanomaterials. In this work, the electronic and magnetic properties of Dy-carboxylate metal-organic networks on Cu(111) based on an eightfold coordination between Dy and ditopic linkers are inspected. [...]
2021 - 10.1002/smll.202102753
Small, Vol. 17, issue 35 (Sep. 2021) , art. 2102753
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3.
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12 p, 5.1 MB |
Slow Magnetic Relaxation of Dy Adatoms with In-Plane Magnetic Anisotropy on a Two-Dimensional Electron Gas
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Bellini, Valerio (Istituto di Nanoscienze-CNR) ;
Rusponi, Stefano (École Polytechnique Fédérale de Lausanne. Institute of Physics) ;
Kolorenč, Jindřich (Czech Academy of Sciences. Institute of Physics) ;
Mahatha, Sanjoy K. (Thapar Institute of Engineering and Technology) ;
Valbuena, Miguel Ángel (Institut Català de Nanociència i Nanotecnologia) ;
Persichetti, Luca (Università di Roma "Tor Vergata") ;
Pivetta, Marina (École Polytechnique Fédérale de Lausanne. Institute of Physics) ;
Sorokin, Boris V. (École Polytechnique Fédérale de Lausanne. Institute of Physics) ;
Merk, Darius (École Polytechnique Fédérale de Lausanne. Institute of Physics) ;
Reynaud, Sébastien (École Polytechnique Fédérale de Lausanne. Institute of Physics) ;
Sblendorio, Dante (École Polytechnique Fédérale de Lausanne. Institute of Physics) ;
Stepanow, Sebastian (Eidgenössische Technische Hochschule Zürich) ;
Nistor, Corneliu (Eidgenössische Technische Hochschule Zürich) ;
Gargiani, Pierluigi (ALBA Laboratori de Llum de Sincrotró) ;
Betto, Davide (European Synchrotron Radiation Facility) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ;
Gambardella, Pietro (Eidgenössische Technische Hochschule Zürich) ;
Brune, Harald (École Polytechnique Fédérale de Lausanne. Institute of Physics) ;
Carbone, Carlo (Consiglio Nazionale delle Ricerche. Istituto di Struttura della Materia) ;
Barla, Alessandro (Consiglio Nazionale delle Ricerche. Istituto di Struttura della Materia)
We report on the magnetic properties of Dy atoms adsorbed on the (001) surface of SrTiO. X-ray magnetic circular dichroism reveals slow relaxation of the Dy magnetization on a time scale of about 800 s at 2. [...]
2022 - 10.1021/acsnano.2c04048
ACS nano, Vol. 16, Issue 7 (June 2022) , p. 11182-11193
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4.
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10 p, 3.5 MB |
Influence of 4f filling on electronic and magnetic properties of rare earth-Au surface compounds
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Fernandez Gomez-Recuero, Laura (Universidad del País Vasco. Departamento de Física Aplicada) ;
Blanco Rey, Maria (Universidad del País Vasco. Departamento de Polímeros y Materiales Avanzados) ;
Castrillo-Bodero, R. (Donostia International Physics Center) ;
Ilyn, M. (Donostia International Physics Center) ;
Ali, Khadiza (Donostia International Physics Center) ;
Turco, Elia (Consejo Superior de Investigaciones Científicas (Espanya). Centro de Física de Materiales) ;
Corso, Martina (Consejo Superior de Investigaciones Científicas (Espanya). Centro de Física de Materiales) ;
Ormaza, Maider (Universidad del País Vasco. Departamento de Física Aplicada) ;
Gargiani, Pierluigi (ALBA Laboratori de Llum de Sincrotró) ;
Valbuena, Miguel Ángel (Institut Català de Nanociència i Nanotecnologia) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ;
Moras, Paolo (Consiglio Nazionale Delle Ricerche. Istituto di Struttura della Materia) ;
Sheverdyaeva, Polina (Consiglio Nazionale Delle Ricerche. Istituto di Struttura della Materia) ;
Kundu, Asish K. (Consiglio Nazionale Delle Ricerche. Istituto di Struttura della Materia) ;
Jugovac, Matteo (Consiglio Nazionale Delle Ricerche. Istituto di Struttura della Materia) ;
Laubschat, C. (Technische Universität Dresden. Institut für Festkörper-und Materialphysik) ;
Ortega Conejero, Enrique (Universidad del País Vasco. Departamento de Física Aplicada) ;
Schiller, Frederik (Donostia International Physics Center)
One-atom-thick rare-earth/noble metal (RE-NM) compounds are attractive materials to investigate two-dimensional magnetism, since they are easy to synthesize into a common RE-NM2 structure with high crystal perfection. [...]
2020 - 10.1039/d0nr04964f
Nanoscale, Vol. 12, issue 43 (Nov. 2020) , p. 22258-22267
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5.
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18 p, 5.2 MB |
Molecular Approach for Engineering Interfacial Interactions in Magnetic/Topological Insulator Heterostructures
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González Cuxart, Marc (Institut Català de Nanociència i Nanotecnologia) ;
Valbuena, Miguel Ángel (Institut Català de Nanociència i Nanotecnologia) ;
Robles, Roberto (Centro de Física de Materiales (CSIC-UPV/EHU)) ;
Moreno, Cesar (Institut Català de Nanociència i Nanotecnologia) ;
Bonell, Frédéric (Institut Català de Nanociència i Nanotecnologia) ;
Sauthier, Guillaume (Institut Català de Nanociència i Nanotecnologia) ;
Imaz, Inhar (Institut Català de Nanociència i Nanotecnologia) ;
Xu, Heng (Institut Català de Nanociència i Nanotecnologia) ;
Nistor, Corneliu (ETH Zurich. Department of Materials) ;
Barla, Alessandro (Istituto di Struttura della Materia) ;
Gargiani, Pierluigi (ALBA Laboratori de Llum de Sincrotró) ;
Valvidares, Manuel (ALBA Laboratori de Llum de Sincrotró) ;
Maspoch Comamala, Daniel (Institut Català de Nanociència i Nanotecnologia) ;
Gambardella, Pietro (ETH Zurich. Department of Materials) ;
Valenzuela, Sergio O. (Institut Català de Nanociència i Nanotecnologia) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia)
Controlling interfacial interactions in magnetic/topological insulator heterostructures is a major challenge for the emergence of novel spin-dependent electronic phenomena. As for any rational design of heterostructures that rely on proximity effects, one should ideally retain the overall properties of each component while tuning interactions at the interface. [...]
2020 - 10.1021/acsnano.0c02498
ACS nano, Vol. 14, Issue 5 (May 2020) , p. 6285-6294
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6.
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32 p, 1.5 MB |
Electronic Structure of Titanylphthalocyanine Layers on Ag(111)
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Lerch, A. (Philipps-Universität Marburg) ;
Fernández, L. (TU Dresden) ;
Ilyn, M. (Donostia International Physics Center) ;
Gastaldo, Michele (Institut Català de Nanociència i Nanotecnologia) ;
Paradinas Aranjuelo, Marcos (Institut Català de Nanociència i Nanotecnologia) ;
Valbuena, Miguel Ángel (Institut Català de Nanociència i Nanotecnologia) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ;
Ibrahim, A. B. M. (Philipps-Universität Marburg) ;
Sundermeyer, J. (Philipps-Universität Marburg) ;
Höfer, U. (Philipps-Universität Marburg) ;
Schiller, Frederik (Centro de Física de Materiales CSIC)
We have investigated the electronic structures of axially oxo functionalized titanylphthalocyanine (TiOPc) on Ag(111) by X-ray and ultraviolet photoelectron spectroscopies, two-photon photoemission, X-ray absorption spectroscopy, and X-ray magnetic circular dichroism. [...]
2017 - 10.1021/acs.jpcc.7b09147
Journal of physical chemistry. C, Vol. 121, Issue 45 (November 2017) , p. 25353-25363
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7.
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14 p, 1.8 MB |
Towards microscopic control of the magnetic exchange coupling at the surface of a topological insulator
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Rüssmann, Philipp (Peter Grünberg Institut) ;
Mahatha, Sanjoy K. (Aarhus University. Department of Physics and Astronomy) ;
Sessi, Paolo (Universität Würzburg) ;
Valbuena, Miguel Ángel (Institut Català de Nanociència i Nanotecnologia) ;
Bathon, Thomas (Universität Würzburg) ;
Fauth, Kai (Universität Würzburg) ;
Godey, Sylvie (Institut Català de Nanociència i Nanotecnologia) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ;
Kokh, Konstantin A. (Novosibirsk State University) ;
Tereshchenko, Oleg E. (Novosibirsk State University) ;
Gargiani, Pierluigi (ALBA Laboratori de Llum de Sincrotró) ;
Valvidares, Manuel (ALBA Laboratori de Llum de Sincrotró) ;
Jiménez, Erika (European Synchrotron Radiation Facility) ;
Brookes, N. B (European Synchrotron Radiation Facility) ;
Bode, Matthias (Universität Würzburg) ;
Bihlmayer, G (Peter Grünberg Institut) ;
Blügel, Stefan (Peter Grünberg Institut) ;
Mavropoulos, Phivos (Peter Grünberg Institut) ;
Carbone, Carlo (Istituto di Struttura della Materia) ;
Barla, Alessandro (Istituto di Struttura della Materia)
Magnetically doped topological insulators may produce novel states of electronic matter, where for instance the quantum anomalous Hall effect state can be realized. Pivotal to this goal is a microscopic control over the magnetic state, defined by the local electronic structure of the dopants and their interactions. [...]
2018 - 10.1088/2515-7639/aad02a
JPhys materials, Vol. 1, Núm. 1 (September 2018) , art. 015002
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8.
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16 p, 13.4 MB |
Polarization dependence of angle-resolved photoemission with submicron spatial resolution reveals emerging one-dimensionality of electrons in NbSe3
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Valbuena, Miguel Ángel (Institut Català de Nanociència i Nanotecnologia) ;
Chudzinski, P. (Institute for Theoretical Physics) ;
Pons, S. (École Polytechnique Fédérale de Lausanne) ;
Conejeros, Sergio (Universidad Católica Del Norte. Departamento de Química) ;
Alemany, Pere (Universitat de Barcelona. Departament de Ciència de Materials i Química Física) ;
Canadell Casanova, Enric 1950- (Institut de Ciència de Materials de Barcelona) ;
Berger, H. (École Polytechnique Fédérale de Lausanne) ;
Frantzeskakis, E. (Synchrotron SOLEIL) ;
Avila, J. (Synchrotron SOLEIL) ;
Asensio, M. C. (Synchrotron SOLEIL) ;
Giamarchi, T. (University of Geneva. Department of Quantum Matter Physics) ;
Grioni, M. (École Polytechnique Fédérale de Lausanne)
In materials with nearly commensurate band filling the electron liquid may spontaneously separate into components with distinct properties, yielding complex intra-and interunit cell ordering patterns and a reduced dimensionality. [...]
2019 - 10.1103/PhysRevB.99.075118
Physical review B, Vol. 99, Issue 7 (February 2019) , art. 75118
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9.
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15 p, 5.7 MB |
Superparamagnetism-induced mesoscopic electron focusing in topological insulators
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Sessi, Paolo (Universität Würzburg) ;
Rüßmann, P. (Peter Grünberg Institut) ;
Bathon, Thomas (Universität Würzburg) ;
Barla, Alessandro (Consiglio Nazionale Delle Ricerche) ;
Kokh, K. A. (Novosibirsk State University) ;
Tereshchenko, O. E. (Russian Academy of Sciences) ;
Fauth, Kai (Universität Würzburg) ;
Mahatha, Sanjoy K (Consiglio Nazionale Delle Ricerche) ;
Valbuena, Miguel Ángel (Institut Català de Nanociència i Nanotecnologia) ;
Godey, Sylvie (Institut Català de Nanociència i Nanotecnologia) ;
Glott, F. (Physikalisches Institut. Experimentelle Physik II. Universität Würzburg) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ;
Gargiani, Pierluigi (ALBA Laboratori de Llum de Sincrotró) ;
Valvidares, Manuel (ALBA Laboratori de Llum de Sincrotró) ;
Long, N. H. (Peter Grünberg Institut) ;
Carbone, Carlo (Consiglio Nazionale Delle Ricerche) ;
Mavropoulos, Phivos (Peter Grünberg Institut) ;
Blügel, Stefan (Peter Grünberg Institut) ;
Bode, Matthias (Universität Würzburg)
Recently it has been shown that surface magnetic doping of topological insulators induces backscattering of Dirac states which are usually protected by time-reversal symmetry [Sessi, Nat. Commun. 5, 5349 (2014)10. [...]
2016 - 10.1103/PhysRevB.94.075137
Physical review B, Vol. 94, Issue 7 (August 2016) , art. 75137
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10.
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9 p, 2.0 MB |
Structure and electronic states of vicinal Ag(111) surfaces with densely kinked steps
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Ortega Conejero, Enrique (Universidad del País Vasco. Departamento de Física Aplicada) ;
Vasseur, Guillaume (Donostia International Physics Centre) ;
Piquero Zulaica, Ignacio (Centro de Física de Materiales CSIC) ;
Matencio, Sonia (Institut Català de Nanociència i Nanotecnologia) ;
Valbuena, Miguel Ángel (Institut Català de Nanociència i Nanotecnologia) ;
Rault, Julien E. (Synchrotron SOLEIL) ;
Schiller, Frederik (Centro de Física de Materiales CSIC) ;
Corso, Martina (Centro de Física de Materiales CSIC) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ;
Lobo Checa, Jorge (Universidad de Zaragoza. Departamento de Física de la Materia Condensada)
Vicinal surfaces exhibiting arrays of atomic steps are frequently investigated due to their diverse physical-chemical properties and their use as growth templates. However, surfaces featuring steps with a large number of low-coordinated kink-atoms have been widely ignored, despite their higher potential for chemistry and catalysis. [...]
2018 - 10.1088/1367-2630/aacbb7
New journal of physics, Vol. 20 (July 2018) , art. 73010
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