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Autor León Yebra, Carlos |
Documentos disponibles escritos por este autor (82)
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Nemes, Norbert Marcel ; Tornos, J. ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo | American Physical Society | 2011-10-04We report the observation between 40 and 120 K of anomalous magnetic hysteresis loops in thin epitaxial films of La_(0.7)Ca_(0.3)MnO_(3) grown on ferroelectric BaTiO_(3). These hysteresis loops display extremely unusual features: after switching[...]texto impreso
Tornos Castillo, Javier ; Gallego Toledo, Fernando ; Hernández Martín, David ; Orfila Rodríguez, Gloria ; Cabero Piris, Mariona ; Cuéllar Jiménez, Fabián Andrés ; Arias Serna, Diego ; Rivera Calzada, Alberto Carlos ; Sefriuoi, Zouhair ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo | American Physical Society | 2019-01-22The electronic reconstruction occurring at oxide interfaces may be the source of interesting device concepts for future oxide electronics. Among oxide devices, multiferroic tunnel junctions are being actively investigated as they offer the possi[...]texto impreso
León Yebra, Carlos ; Biskup Zaja, Nevenko ; Santamaría Sánchez-Barriga, Jacobo ; Alberca Carretero, Aurora ; Andrés, Amado de ; Gárcia Hernández, M. ; Munuera, C. ; Mompean, F.J. ; Nemes, Norbert Marcel | American Physical Society | 2012-10-24La0.7Ca0.3MnO3 optimally doped epitaxial films were grown on ferroelectric BaTiO3 substrates. Electronic transport (magnetoresistance and electroresistance) and magnetic properties showed important anomalies in the temperature interval between 6[...]texto impreso
Sefrioui, Zouhair ; Arias Serna, Diego ; Peña, V. ; Villegas, J. E. ; Varela del Arco, María ; Prieto, P. ; León Yebra, Carlos ; Martínez, J. L. ; Santamaría Sánchez-Barriga, Jacobo | American Physical Society | 2003-06-13We study the interplay between magnetism and superconductivity in high-quality YBa_(2)Cu_(3)O_(7)(YBCO)/La_(0.7)Ca_(0.3)MnO_(3)(LCMO) superlattices. We find evidence for the YBCO superconductivity depression in the presence of the LCMO layers. W[...]texto impreso
Peña, V. ; Sefrioui, Zouhair ; Arias Serna, Diego ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo ; Martínez, J. L. ; te Velthuis, S. G. E. ; Hoffmann, A. | American Physical Society | 2005-02-11We show magnetoresistance in excess of 1000% in trilayers containing highly spin-polarized La_(0.7)Ca_(0.3)MnO_(3) and high-T_(c) superconducting YBa_(2)Cu_(3)O_(7). This large magnetoresistance is reminiscent of the giant magnetoresistance (GMR[...]texto impreso
Shen, Xiao ; Pennycook, Timothy J. ; Hernández Martín, David ; Pérez, Ana ; Varela del Arco, María ; Puzyrev, Yevgeniy S. ; León Yebra, Carlos ; Sefrioui, Zouhair | Wiley-Blackwell | 2016-08-19Memristive switching serves as the basis for a new generation of electronic devices. Memristors are two-terminal devices in which the current is turned on and off by redistributing point defects, e.g., vacancies, which is difficult to control. M[...]texto impreso
Liu, Yaohua ; Tornos, J. ; te Velthuis, S. G. E. ; Freeland, J. W. ; Zhou, H. ; Steadman, P. ; Bencok, P. ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo | American Institute of Physics | 2016-04In artificial multiferroics hybrids consisting of ferromagnetic La_(0.7)Sr_(0.3)MnO_(3) (LSMO) and ferroelectric BaTiO_(3) epitaxial layers, net Ti moments are found from polarized resonant soft x-ray reflectivity and absorption. The Ti dichroic[...]texto impreso
Moreno, Karla J. ; Fuentes, Antonio F. ; Maczka, Miroslaw ; Hanuza, Jerzy ; Amador, Ulises ; Santamaría Sánchez-Barriga, Jacobo ; León Yebra, Carlos | American Physical Society | 2007-05We report on the influence of oxygen order in the oxygen-ion dynamics in the ionic conductor Gd_(2)(Ti_(0.65)Zr_(0.35))_(2)O_(7). The metastable Gd_(2)(Ti_(0.65)Zr_(0.35))_(2)O_(7) powders prepared by mechanical milling present an anion-deficien[...]texto impreso
Bruno, Flavio Yair ; Grisolia, M. N. ; Visani, C. ; Valencia, S. ; Varela del Arco, María ; Aburdan, R. ; Tornos, J. ; Rivera Calzada, Alberto Carlos ; Ünal, A. A. ; Pennycook, S. J. ; Sefrioui, Zouhair ; León Yebra, Carlos ; Villegas, J. E. ; Santamaría Sánchez-Barriga, Jacobo ; Barthélémy, A. ; Bibes, M. | Nature Publishing Group | 2015-02-17At interfaces between complex oxides, electronic, orbital and magnetic reconstructions may produce states of matter absent from the materials involved, offering novel possibilities for electronic and spintronic devices. Here we show that magneti[...]texto impreso
Varela del Arco, María ; Sefrioui, Zouhair ; Arias Serna, Diego ; Navacerrada, M. A. ; Lucía Mulas, María Luisa ; López de la Torre, M. A. ; León Yebra, Carlos ; Loos, G. D. ; Sánchez Quesada, Francisco ; Santamaría Sánchez-Barriga, Jacobo | American Physical Society | 1999-11-08The structure of high quality [YBCO_(N)/PBCO_(M)]_(1000 Å) superlattices, with N ranging between 1 and 12 unit cells and M = 5 unit cells, grown by high oxygen pressure sputtering, is analyzed. Intracell atomic structure of the layers along the [...]texto impreso
Durá, O. J. ; López de la Torre, M. A. ; Vázquez, L. ; Chaboy, J. ; Boada, R. ; Rivera Calzada, Alberto Carlos ; Santamaría Sánchez-Barriga, Jacobo ; León Yebra, Carlos | American Physical Society | 2010-05-01We report on the effect of grain size on the ionic conductivity of yttria-stabilized zirconia samples synthesized by ball milling. Complex impedance measurements, as a function of temperature and frequency are performed on 10 mol % yttria-stabil[...]texto impreso
Visani, C. ; Cuellar, F. ; Pérez Muñoz, Ana Mª ; Sefrioui, Zouhair ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo ; Villegas, Javier E. | American Physical Society | 2015-07-31We experimentally study the superconducting proximity effect in high-temperature superconductor/halfmetallic ferromagnet YBa_(2)Cu_(3)O_(7)/La_(2/3)Ca_(1/3)MnO_(3) junctions, using conductance measurements. In particular, we investigate the magn[...]texto impreso
Nemes, Norbert Marcel ; Visani, C. ; León Yebra, Carlos ; Gárcia Hernández, M. ; Simón, F. ; Feher, T. ; te Velthuis, S. G. E. ; Hoffmann, A. ; Santamaría Sánchez-Barriga, Jacobo | American Institute of Physics | 2010-07-19We report a memory concept utilizing ferromagnet/superconductor/ferromagnet La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7)/La_(0.7)Ca_(0.3)MnO_(3) thin film hybrid structures. The orientation of the magnetic field with respect to the ferromagnetic e[...]texto impreso
Prieto, P. ; Vivas, P. ; Campillo, G. ; Baca, E. ; Castro, L. F. ; Varela del Arco, María ; Ballesteros, C. ; Villegas, J. E. ; Arias Serna, Diego ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo | American Institute of Physics | 2001-06-15We report on the magnetic and superconducting properties of La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7) (LCMO/YBCO) superlattices. For a constant LCMO layer thickness of 6 unit cells (u.c.), resistance and susceptibility measurements show superco[...]texto impreso
Alberca, A. ; Nemes, Norbert Marcel ; Mompean, F. J. ; Feher, T. ; Simón, F. ; Tornos, J. ; León Yebra, Carlos ; Munuera, C. ; Kirby, B. J. ; Fitzsimmons, M. R. ; Hernando Grande, Antonio ; Santamaría Sánchez-Barriga, Jacobo ; Gárcia Hernández, M. | American Physical Society | 2013-10-11The magnetism of La_(0.7)Ca_(0.3)MnO_(3) (LCMO) epitaxial thin films grown on SrTiO_(3) (STO) and BaTiO_(3) (BTO) substrates is studied using polarized neutron reflectometry (PNR) and ferromagnetic resonance (FMR) techniques. In LCMO/BTO, PNR r[...]