Unité Mixte de Physique CNRS/Thales

A. - C. Basaran, C. Monton, J. Trastoy, R. Bernard, K. Bouzehouane, J. E. Villegas, I. - K. Schuller, Emergence of exchange bias and giant coercive field enhancement by internal magnetic frustration in La0.67Sr0.33MnO3 thin films. Journal of Magnetism and Magnetic Materials. 550, 169077 (2022).

D. Sanchez-Manzano, S. Mesoraca, F. A. Cuellar, M. Cabero, V. Rouco, G. Orfila, X. Palermo, A. Balan, L. Marcano, A. Sander, M. Rocci, J. Garcia-Barriocanal, F. Gallego, J. Tornos, A. Rivera, F. Mompean, M. Garcia-Hernandez, J. M. Gonzalez-Calbet, C. Leon, S. Valencia, C. Feuillet-Palma, N. Bergeal, A. I. Buzdin, J. Lesueur, J. E. Villegas, J. Santamaria, Extremely long-range, high-temperature Josephson coupling across a half-metallic ferromagnet. Nature Materials. 21, 188 (2022).

A. Sander, G. Orfila, D. Sanchez-Manzano, N. Reyren, M. A. Mawass, F. Gallego, S. Collin, K. Bouzehouane, K. Höflich, F. Kronast, F. Grilli, A. Rivera-Calzada, J. Santamaria, J. E. Villegas, S. Valencia, Superconducting imprint of magnetic textures in ferromagnets with perpendicular magnetic anisotropy. Scientific Reports. 11, 20788 (2021).

M. - W. Yoo, J. Tornos, A. Sander, L. - F. Lin, N. Mohanta, A. Peralta, D. Sanchez-Manzano, F. Gallego, D. Haskel, J. W. Freeland, D. J. Keavney, Y. Choi, J. Strempfer, X. Wang, M. Cabero, H. B. Vasili, M. Valvidares, G. Sanchez-Santolino, J. M. Gonzalez-Calbet, A. Rivera, C. Leon, S. Rosenkranz, M. Bibes, A. Barthelemy, A. Anane, E. Dagotto, S. Okamoto, S. G. E. te Velthuis, J. Santamaria, J. E. Villegas, Large intrinsic anomalous Hall effect in SrIrO3 induced by magnetic proximity effect. Nature Communications. 12, 3283 (2021).

S. J. Carreira, D. Sanchez-Manzano, M. - W. Yoo, K. Seurre, V. Rouco, A. Sander, J. Santamaría, A. Anane, J. - E. Villegas, Spin pumping in d-wave superconductor-ferromagnet hybrids. Physical Review B. 104, 144428 (2021).

D. Perconte, K. Seurre, V. Humbert, C. Ulysse, A. Sander, J. Trastoy, V. Zatko, F. Godel, P. R. Kidambi, S. Hofmann, X. P. Zhang, D. Bercioux, F. S. Bergeret, B. Dlubak, P. Seneor, J. - E. Villegas, Long-Range Propagation and Interference of d-Wave Superconducting Pairs in Graphene. Physical Review Letters. 125, 087002 (2020).

X. Palermo, N. Reyren, S. Mesoraca, A. V. Samokhvalov, S. Collin, F. Godel, A. Sander, K. Bouzehouane, J. Santamaria, V. Cros, A. I. Buzdin, J. - E. Villegas, Tailored Flux Pinning in Superconductor-Ferromagnet Multilayers with Engineered Magnetic Domain Morphology From Stripes to Skyrmions. Physical Review Applied. 13, 014043 (2020).

V. Rouco, R. El Hage, A. Sander, J. Grandal, K. Seurre, X. Palermo, J. Briatico, S. Collin, J. Trastoy, K. Bouzehouane, A. I. Buzdin, G. Singh, N. Bergeal, C. Feuillet-Palma, J. Lesueur, C. Leon, M. Varela, J. Santamaría, J. - E. Villegas, Quasiparticle tunnel electroresistance in superconducting junctions. Nature Communications. 11, 658 (2020).

J. Trastoy, A. Camjayi, J. del Valle, Y. Kalcheim, J. - P. Crocombette, D. A. Gilbert, J. A. Borchers, J. E. Villegas, D. Ravelosona, M. J. Rozenberg, I. K. Schuller, Magnetic field frustration of the metal-insulator transition in V2O3. Physical Review B. 101, 245109 (2020).

H. Meng, Y. Ren, J. - E. Villegas, A. I. Buzdin, Josephson current through a ferromagnetic bilayer: Beyond the quasiclassical approximation. Physical Review B. 100, 224514 (2019).

Z. Liao, N. Gauquelin, R. J. Green, K. Müller-Caspary, I. Lobato, L. Li, S. V. Aert, J. Verbeeck, M. Huijben, M. - N. Grisolia, V. Rouco, R. El Hage, J. - E. Villegas, A. Mercy, M. Bibes, P. Ghosez, G. A. Sawatzky, G. Rijnders, G. Koster, Metal–insulator-transition engineering by modulation tilt-control in perovskite nickelates for room temperature optical switching. Proceedings of the National Academy of Sciences. 115, 9515-9520 (2018).

L. Bégon-Lours, V. Rouco, Q. Qiao, A. Sander, M. A. Roldán, R. Bernard, J. Trastoy, A. Crassous, E. Jacquet, K. Bouzehouane, M. Bibes, J. Santamaría, A. Barthélémy, M. Varela, J. - E. Villegas, Factors limiting ferroelectric field-effect doping in complex oxide heterostructures. Physical Review Materials. 2, 084405 (2018).

D. Perconte, F. A. Cuellar, C. Moreau-Luchaire, M. Piquemal-Banci, R. Galceran, P. - R. Kidambi, M. - B. Martin, S. Hofmann, R. Bernard, B. Dlubak, P. Seneor, J. - E. Villegas, Tunable Klein-like tunnelling of high-temperature superconducting pairs into graphene. Nature Physics. 14, 25 (2018).

L. Bégon-Lours, V. Rouco, A. Sander, J. Trastoy, R. Bernard, E. Jacquet, K. Bouzehouane, S. Fusil, V. Garcia, A. Barthélémy, M. Bibes, J. Santamaría, J. - E. Villegas, High-Temperature-Superconducting Weak Link Defined by the Ferroelectric Field Effect. Phys. Rev. Applied. 7, 064015 (2017).

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).

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).

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).

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).

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

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).

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).

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

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).

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).

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).

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).

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).

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).

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).

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. 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).

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

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, 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. 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).

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).

Unité Mixte de Physique CNRS/Thales

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VILLEGAS Javier