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VILLEGAS Javier

Chercheur CNRS

Contact :

Email
Tel : +33 1 69 41 58 56
Fax : +33 1 69 41 58 78

site web personnel
http://javierevillegas.wordpress.com/

Publications


  • S. Hurand, A. Jouan, C. Feuillet-Palma, G. Singh, E. Lesne, N. Reyren, A. Barthélémy, M. Bibes, J. - E. Villegas, C. Ulysse, M. Pannetier-Lecoeur, M. Malnou, J. Lesueur, N. Bergeal, Top-gated field-effect LaAlO3/SrTiO3 devices made by ion-irradiation. Applied Physics Letters. 108, 052602 (2016).

  • M. Rocci, J. Azpeitia, J. Trastoy, A. Perez-Munoz, M. Cabero, R. F. Luccas, C. Munuera, F. J. Mompean, M. Garcia-Hernandez, K. Bouzehouane, Z. Sefrioui, C. Leon, A. Rivera-Calzada, J. - E. Villegas, J. Santamaria, Proximity Driven Commensurate Pinning in YBa2Cu3O7 through All-Oxide Magnetic Nanostructures. Nano Letters. 15, 7526–7531 (2015).

  • A. - C. Basaran, J. - E. Villegas, J. S. Jiang, A. Hoffmann, I. - K. Schuller, Mesoscopic magnetism and superconductivity. MRS Bulletin. 40, 925–932 (2015).

  • J. Trastoy, C. Ulysse, R. Bernard, M. Malnou, N. Bergeal, J. Lesueur, J. Briatico, J. - E. Villegas, Tunable Flux-Matching Effects in High-T-c Superconductors with Nonuniform Pinning Arrays. Physical Review Applied. 4, 054003 (2015).

  • S. Hurand, A. Jouan, C. Feuillet-Palma, G. Singh, J. Biscaras, E. Lesne, N. Reyren, A. Barthélémy, M. Bibes, J. - E. Villegas, C. Ulysse, X. Lafosse, M. Pannetier-Lecoeur, S. Caprara, M. Grilli, J. Lesueur, N. Bergeal, Field-effect control of superconductivity and Rashba spin-orbit coupling in top-gated LaAlO3/SrTiO3 devices. Scientific Reports. 5, 12751 (2015).

  • R. Morales, A. - C. Basaran, J. - E. Villegas, D. Navas, N. Soriano, B. Mora, C. Redondo, X. Batlle, I. - K. Schuller, Exchange-Bias Phenomenon: The Role of the Ferromagnetic Spin Structure. Physical Review Letters. 114, 097202 (2015).

  • C. Visani, F. Cuellar, A. Perez-Munoz, Z. Sefrioui, C. Leon, J. Santamaria, J. - E. Villegas, Magnetic field influence on the proximity effect at YBa2Cu3O7/La2/3Ca1/3MnO3 superconductor/half-metal interfaces. Physical Review B. 92, 014519 (2015).

  • J. - G. Ramirez, T. Saerbeck, S. Wang, J. Trastoy, M. Malnou, J. Lesueur, J. - P. Crocombette, J. - E. Villegas, I. - K. Schuller, Effect of disorder on the metal-insulator transition of vanadium oxides: Local versus global effects. Physical Review B. 91, 205123 (2015).

  • F. Y. Bruno, M. N. Grisolia, C. Visani, S. Valencia, M. Varela, R. Abrudan, J. Tornos, A. Rivera-Calzada, A. A. Uenal, S. J. Pennycook, Z. Sefrioui, C. Leon, J. - E. Villegas, J. Santamaria, A. Barthélémy, M. Bibes, Insight into spin transport in oxide heterostructures from interface-resolved magnetic mapping. Nature Communications. 6, 6306 (2015).

  • J. Trastoy, M. Malnou, C. Ulysse, R. Bernard, N. Bergeal, G. Faini, J. Lesueur, J. Briatico, J. - E. Villegas, Freezing and thawing of artificial ice by thermal switching of geometric frustration in magnetic flux lattices. Nature Nanotechnology. 9, 710–715 (2014).

  • J. Trastoy, V. Rouco, C. Ulysse, R. Bernard, G. Faini, J. Lesueur, J. Briatico, J. - E. Villegas, Nanostructuring of high-T-C superconductors via masked ion irradiation for efficient ordered vortex pinning. Physica C: Superconductivity. 506, 195–200 (2014).

  • H. Yamada, M. Marinova, P. Altuntas, A. Crassous, L. Begon-Lours, S. Fusil, E. Jacquet, V. Garcia, K. Bouzehouane, A. Gloter, J. - E. Villegas, A. Barthélémy, M. Bibes, Ferroelectric control of a Mott insulator. Scientific Reports. 3, 2834 (2013).

  • J. Trastoy, V. Rouco, C. Ulysse, R. Bernard, A. Palau, T. Puig, G. Faini, J. Lesueur, J. Briatico, J. - E. Villegas, Unusual magneto-transport of YBa2Cu3O7-δ films due to the interplay of anisotropy, random disorder and nanoscale periodic pinning. New Journal of Physics. 15, 103022 (2013).

  • C. Visani, A. Crassous, J. - E. Villegas, All-oxide superconductor/ferroic hybrids. European Physical Journal Special Topics. 222, 1241–1256 (2013).

  • A. Crassous, R. Bernard, S. Fusil, K. Bouzehouane, J. Briatico, M. Bibes, A. Barthélémy, J. - E. Villegas, BiFeO3/YBa2Cu3O7-δ heterostructures for strong ferroelectric modulation of superconductivity. Journal of Applied Physics. 113, 024910 (2013).

  • I. Swiecicki, C. Ulysse, T. Wolf, R. Bernard, N. Bergeal, J. Briatico, G. Faini, J. Lesueur, J. - E. Villegas, Strong field-matching effects in superconducting YBa2Cu3O7-δ films with vortex energy landscapes engineered via masked ion irradiation. Physical Review B. 85, 224502 (2012).

  • C. Visani, Z. Sefrioui, J. Tornos, C. Leon, J. Briatico, M. Bibes, A. Barthélémy, J. Santamaria, J. - E. Villegas, Equal-spin Andreev reflection and long-range coherent transport in high-temperature superconductor/half-metallic ferromagnet junctions. Nature Physics. 8, 539–543 (2012).

  • L. Aviles Felix, M. Sirena, L. A. Agueero Guzman, J. Gonzalez Sutter, S. Pons Vargas, L. B. Steren, R. Bernard, J. Trastoy, J. - E. Villegas, J. Briatico, N. Bergeal, J. Lesueur, G. Faini, Structural and electrical characterization of ultra-thin SrTiO3 tunnel barriers grown over YBa2Cu3O7 electrodes for the development of high T-c Josephson junctions. Nanotechnology. 23, 495715 (2012).

  • J. - E. Villegas, I. Swiecicki, R. Bernard, A. Crassous, J. Briatico, T. Wolf, N. Bergeal, J. Lesueur, C. Ulysse, G. Faini, X. Hallet, L. Piraux, Imprinting nanoporous alumina patterns into the magneto-transport of oxide superconductors. Nanotechnology. 22, 075302 (2011).

  • C. Visani, P. - J. Metaxas, A. Collaudin, B. Calvet, R. Bernard, J. Briatico, C. Deranlot, K. Bouzehouane, J. - E. Villegas, Hysteretic magnetic pinning and reversible resistance switching in high-temperature superconductor/ferromagnet multilayers. Physical Review B. 84, 054539 (2011).

  • C. Chiliotte, G. Pasquini, V. Bekeris, J. - E. Villegas, C. - P. Li, I. - K. Schuller, Vortex lattice dynamics in Nb films with competing intrinsic random and artificial periodic pinning. Superconductor Science and Technology. 24, 065008 (2011).

  • M. Bibes, J. - E. Villegas, A. Barthélémy, Ultrathin oxide films and interfaces for electronics and spintronics. Advances in Physics. 60 (2011), doi:10.1080/00018732.2010.534865.

  • A. Crassous, R. Bernard, S. Fusil, K. Bouzehouane, D. Le Bourdais, S. Enouz-Vedrenne, J. Briatico, M. Bibes, A. Barthélémy, J. - E. Villegas, Nanoscale Electrostatic Manipulation of Magnetic Flux Quanta in Ferroelectric/Superconductor BiFeO3/YBa2Cu3O7-δ Heterostructures. Physical Review Letters. 107, 247002 (2011).

  • J. - E. Villegas, I. - K. Schuller, Controllable manipulation of superconductivity using magnetic vortices. Superconductor Science and Technology. 24, 024004 (2011).

  • J. - E. Villegas, A. Sharoni, C. - P. Li, I. - K. Schuller, Anomalous, hysteretic, transverse magnetoresistance in superconducting thin films with magnetic vortex arrays. Applied Physics Letters. 94, 252507 (2009).

  • J. Kermorvant, K. van der Beek, J. - C. Mage, B. Marcilhac, Y. Lemaitre, J. Briatico, R. Bernard, J. - E. Villegas, Joule heating and high frequency nonlinear effects in the surface impedance of high Tc superconductors. Journal of Applied Physics. 106, 023912 (2009).

  • M. Kovylina, M. Erekhinsky, R. Morales, J. - E. Villegas, I. - K. Schuller, A. Labarta, X. Batlle, Tuning exchange bias in Ni/FeF2 heterostructures using antidot arrays. Applied Physics Letters. 95, 152507 (2009).

  • J. - E. Villegas, K. D. Smith, L. Huang, Y. Zhu, R. Morales, I. - K. Schuller, Switchable collective pinning of flux quanta using magnetic vortex arrays: Experiments on square arrays of Co dots on thin superconducting films. Physical Review B. 77, 134510 (2008).

  • M. Velez, J. I. Martin, J. - E. Villegas, A. Hoffmann, E. M. Gonzalez, J. - L. Vicent, I. - K. Schuller, Superconducting vortex pinning with artificial magnetic nanostructures. Journal of Magnetism and Magnetic Materials. 320, 2547–2562 (2008).