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1.
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11 p, 2.1 MB |
Motion analysis and real-time trajectory prediction of magnetically steerable catalytic Janus micromotors
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Wu, Jiaen (ETH Zürich. Institute of Robotics and Intelligent Systems) ;
Folio, David (University of Orleans. INSA Centre Val de Loire) ;
Zhu, Jiawei (ETH Zürich. Institute of Robotics and Intelligent Systems) ;
Jang, Bumjin (Hanyang University. Department of Robotics) ;
Chen, Xiangzhong (ETH Zürich. Institute of Robotics and Intelligent Systems) ;
Feng, Junxiao (ETH Zurich. Department of Materials) ;
Gambardella, Pietro (ETH Zurich. Department of Materials) ;
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física) ;
Puigmartí-Luis, Josep (Institut de Química Teòrica i Computacional. Departament de Ciència dels Materials i Química Física) ;
Ergeneman, Olgac (ETH Zürich. Institute of Robotics and Intelligent Systems) ;
Ferreira, Antoine (University of Orleans. INSA Centre Val de Loire) ;
Pané i Vidal, Salvador (ETH Zürich. Institute of Robotics and Intelligent Systems)
Chemically driven micromotors display unpredictable trajectories due to the rotational Brownian motion interacting with the surrounding fluid molecules. This hampers the practical applications of these tiny robots, particularly where precise control is a requisite. [...]
2022 -  10.1002/aisy.202200192
Advanced Intelligent Systems, Vol. 4, Issue 11 (November 2022) , art. 2200192
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2.
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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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3.
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6 p, 509.4 KB |
Spin-dependent electron scattering at graphene edges on Ni(111)
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Garcia-Lekue, Aran (Donostia International Physics Center) ;
Balashov, Timofey (Institut Català de Nanociència i Nanotecnologia) ;
Olle, M. (Institut Català de Nanociència i Nanotecnologia) ;
Ceballos, Gustavo (Institut Català de Nanociència i Nanotecnologia) ;
Arnau Pino, Andrés (IKERBASQUE) ;
Gambardella, Pietro (Institut Català de Nanociència i Nanotecnologia) ;
Sanchez-Portal, Daniel (CSIC-UPV - Centro de Física de Materiales (CFM)) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia)
We investigate the scattering of surface electrons by the edges of graphene islands grown on Ni(111). By combining local tunneling spectroscopy and ab initio electronic structure calculations we find that the hybridization between graphene and Ni states results in strongly reflecting graphene edges. [...]
2014 - 10.1103/PhysRevLett.112.066802
Physical review letters, Vol. 112, issue 6 (Feb. 2014) , art. 66802
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4.
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18 p, 6.5 MB |
Coupling of single, double, and triple-decker metal-phthalocyanine complexes to ferromagnetic and antiferromagnetic substrates
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Lodi Rizzini, Alberto (Institut Català de Nanociència i Nanotecnologia) ;
Krull, Cornelius (Institut Català de Nanociència i Nanotecnologia) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ;
Balashov, Timofey (Institut Català de Nanociència i Nanotecnologia) ;
Nistor, Corneliu (ETH Zürich. Department of Materials) ;
Piquerel, Raoul (Institut Català de Nanociència i Nanotecnologia) ;
Klyatskaya, Svetlana (Karlsruhe Institute of Technology. Institute of Nanotechnology) ;
Ruben, Mario (Karlsruhe Institute of Technology. Institute of Nanotechnology) ;
Sheverdyaeva, Polina (Consiglio Nazionale Delle Ricerche. Istituto di Struttura della Materia) ;
Moras, Paolo (Consiglio Nazionale Delle Ricerche. Istituto di Struttura della Materia) ;
Carbone, Carlo (Consiglio Nazionale Delle Ricerche. Istituto di Struttura della Materia) ;
Stamm, Christian (ETH Zürich. Department of Materials) ;
Miedema, Piter (Utrecht University. Debye Institute of Nanomaterials Science) ;
Thakur, Pardeep K. (European Synchrotron Radiation Facility) ;
Sessi, Violetta (European Synchrotron Radiation Facility) ;
Soares, Marcio (European Synchrotron Radiation Facility) ;
Yakhou-Harris, Flora (European Synchrotron Radiation Facility) ;
Cezar, Julio C. (European Synchrotron Radiation Facility) ;
Stepanow, Sebastian (Department of Materials, ETH Zürich) ;
Gambardella, Pietro (Institut Català de Nanociència i Nanotecnologia)
We report a survey of the magnetic properties of metal-organic complexes coupled to ferromagnetic and antiferromagnetic surfaces. Using element-resolved X-ray magnetic circular dichroism, we investigate the magnetism of single, double, and triple-decker phthalocyanines focusing on MnPc, TbPc, and TbPc deposited on Ni, Mn, and CoO thin films. [...]
2014 - 10.1016/j.susc.2014.07.008
Surface Science, Vol. 630 (Dec. 2014) , p. 361-374
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5.
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40 p, 2.2 MB |
Fieldlike and antidamping spin-orbit torques in as-grown and annealed Ta/CoFeB/MgO layers
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Avci, Can Onur (Institut Català de Nanociència i Nanotecnologia) ;
Garello, Kevin (Institut Català de Nanociència i Nanotecnologia) ;
Nistor, Corneliu (Institut Català de Nanociència i Nanotecnologia) ;
Godey, Sylvie. (Institut Català de Nanociència i Nanotecnologia) ;
Ballesteros, Belén (Institut Català de Nanociència i Nanotecnologia) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ;
Barla, Alessandro (Consiglio Nazionale Delle Ricerche. Istituto di Struttura della Materia) ;
Valvidares, Manuel (ALBA Laboratori de Llum de Sincrotró) ;
Pellegrin, Eric. (ALBA Laboratori de Llum de Sincrotró) ;
Ghosh, Abhijit (ETH Zurich. Department of Materials) ;
Miron, Ioan Mihai (SPINTEC) ;
Boulle, Olivier (SPINTEC) ;
Auffret, Stéphane (SPINTEC) ;
Gaudin, Gilles (SPINTEC) ;
Gambardella, Pietro (Institut Català de Nanociència i Nanotecnologia)
We present a comprehensive study of the current-induced spin-orbit torques in perpendicularly magnetized Ta/CoFeB/MgO layers. The samples were annealed in steps up to 300 °C and characterized using x-ray-absorption spectroscopy, transmission electron microscopy, resistivity, and Hall effect measurements. [...]
2014 - 10.1103/PhysRevB.89.214419
Physical review B : Condensed matter and materials physics, Vol. 89, issue 21 (June 2014) , art. 214419
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6.
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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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7.
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10 p, 4.8 MB |
Structure and magnetism of Tm atoms and monolayers on W(110)
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Nistor, Corneliu (Institut Català de Nanociència i Nanotecnologia) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ;
Stepanow, Sebastian (ETH Zürich. Department of Materials) ;
Gambardella, Pietro (Institut Català de Nanociència i Nanotecnologia) ;
Kummer, Kurt (European Synchrotron Radiation Facility) ;
Diez-Ferrer, José Luis (Universidad de Zaragoza. Laboratorio de Microscopias Avanzadas) ;
Coffey, David (Instituto de Ciencia de Materiales de Aragón) ;
De La Fuente, César (Instituto de Ciencia de Materiales de Aragón) ;
Ciria, Miguel (Universidad de Zaragoza. Departamento de Física de la Materia Condensada) ;
Arnaudas, José Ignacio (Universidad de Zaragoza. Departamento de Física de la Materia Condensada)
We investigated the growth and magnetic properties of Tm atoms and monolayers deposited on a W(110) surface using scanning tunneling microscopy and x-ray magnetic circular and linear dichroism. The equilibrium structure of Tm monolayer films is found to be a strongly distorted hexagonal lattice with a Moiré pattern due to the overlap with the rectangular W(110) substrate. [...]
2014 - 10.1103/PhysRevB.90.064423
Physical review B : Condensed matter and materials physics, Vol. 90, issue 6 (Aug. 2014) , art. 64423
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8.
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11 p, 1.9 MB |
Spin tuning of electron-doped metal-phthalocyanine layers
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Stepanow, Sebastian (ETH Zürich. Department of Materials) ;
Lodi Rizzini, Alberto (Institut Català de Nanociència i Nanotecnologia) ;
Krull, Cornelius (Institut Català de Nanociència i Nanotecnologia) ;
Kavich, Jerald (Institut Català de Nanociència i Nanotecnologia) ;
Cezar, Julio C. (European Synchrotron Radiation Facility) ;
Yakhou-Harris, Flora (European Synchrotron Radiation Facility) ;
Sheverdyaeva, Polina M. (Consiglio Nazionale Delle Ricerche (Itàlia). Istituto di Struttura della Materia) ;
Moras, Paolo (Consiglio Nazionale Delle Ricerche (Itàlia). Istituto di Struttura della Materia) ;
Carbone, Carlo (Consiglio Nazionale Delle Ricerche (Itàlia). Istituto di Struttura della Materia) ;
Ceballos, Gustavo (Institut Català de Nanociència i Nanotecnologia) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ;
Gambardella, Pietro (Institut Català de Nanociència i Nanotecnologia)
The spin state of organic-based magnets at interfaces is to a great extent determined by the organic environment and the nature of the spin-carrying metal center, which is further subject to modifications by the adsorbate-substrate coupling. [...]
2014 - 10.1021/ja501204q
Journal of the American Chemical Society, Vol. 136, issue 14 (April 2014) , p. 5451-5459
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9.
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5 p, 227.7 KB |
Kondo screening of the spin and orbital magnetic moments of Fe impurities in Cu
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Joly, Lilian (Université de Strasbourg) ;
Kappler, J. P. (Synchrotron-SOLEIL) ;
Ohresser, P. (Synchrotron-SOLEIL) ;
Sainctavit, Philippe (Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC)) ;
Henry, Y. (Université de Strasbourg) ;
Gautier, F. (Université de Strasbourg) ;
Schmerber, G. (Université de Strasbourg) ;
Kim, D. J. (University of Warwick) ;
Goyhenex, C. (Université de Strasbourg) ;
Bulou, H. (Université de Strasbourg) ;
Bengone, O. (Université de Strasbourg) ;
Kavich, J. J. (Institut Català de Nanociència i Nanotecnologia) ;
Gambardella, Pietro (ETH Zürich) ;
Scheurer, F. (Université de Strasbourg)
We use x-ray magnetic circular dichroism to evidence the effect of correlations on the local impurity magnetic moment in an archetypal Kondo system, namely, a dilute Cu:Fe alloy. Applying the sum rules on the Fe L2,3 absorption edges, the evolution of the spin and orbital moments across the Kondo temperature are determined separately. [...]
2017 - 10.1103/PhysRevB.95.041108
Physical review B, Vol. 95, Issue 4 (January 2017) , art. 41108
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10.
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4 p, 371.3 KB |
Simultaneous in-plane and out-of-plane exchange bias using a single antiferromagnetic layer resolved by x-ray magnetic circular dichroism
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Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ;
Stepanow, S. (Centre d'Investigació en Nanociència i Nanotecnologia) ;
Sort Viñas, Jordi (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (Espanya)) ;
Dieny, B. (Universitat Autònoma de Barcelona. Departament de Física) ;
Nolting, F. (Paul Scherrer Institut (Suïssa)) ;
Gambardella, Pietro (Centre d'Investigació en Nanociència i Nanotecnologia) ;
Institució Catalana de Recerca i Estudis Avançats ;
American Physical Society
We present a study of exchange bias in ferromagnet/antiferromagnet/ferromagnet (FM/AFM/FM) trilayers, with in-plane and out-plane easy axes. Using element-specific x-ray magnetic circular dichroism, we demonstrate that simultaneous in-plane and out-of-plane exchange bias can be induced using a single antiferromagnet and zero field cooling, whereas field cooling only induces exchange bias to the layer with easy axis parallel to the cooling field. [...]
2009 - 10.1063/1.3232213
Applied physics letters, Vol. 95, Issue 15 (October 2009) , p. 152515/1-152515/3
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