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Beltrán Finez, Juan Ignacio ; Gallego, S. ; Cerdá, J. ; Moya, J. S. ; Muñoz, M. C. | American Physical Society | 2003-08-15We report on the formation of strong chemical bonds at the Ni(100)/cubic-ZrO_(2)(100) polar interfaces. Ab initio density functional theory calculations demonstrate that both Zr/Ni and O/Ni junctions are energetically stable, and predict that tw[...]texto impreso
Hernández Martín, David ; Gallego Toledo, Fernando ; Tornos Castillo, Javier ; Rouco Gómez, Víctor ; Beltrán Finez, Juan Ignacio ; Munuera, C. ; Sánchez Manzano, David ; Cabero Piris, Mariona ; Cuéllar Jiménez, Fabián Andrés ; Arias Serna, Diego ; Sánchez Santolino, Gabriel ; Mompean, F. J. ; Gárcia Hernández, M. ; Rivera Calzada, Alberto Carlos ; Pennycook, S. J. ; Varela del Arco, María ; Muñoz, M. C. ; Sefrioui, Zouhair ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo | American Physical Society | 2020-12-30The persistence of ferroelectricity in ultrathin layers relies critically on screening or compensation of polarization charges which otherwise destabilize the ferroelectric state. At surfaces, charged defects play a crucial role in the screening[...]texto impreso
Martínez Pabón, María Beatriz ; Beltrán Finez, Juan Ignacio ; Sánchez Santolino, Gabriel ; Palacio, I. ; López Sánchez, Jesús ; Rubio Zuazo, J. ; Rojo Alaminos, Juan Manuel ; Ferrer, P. ; Mascaraque Susunaga, Arantzazu ; Muñoz, M. C. ; Varela del Arco, María ; Castro, G. R. ; Rodríguez de la Fuente, Óscar | Nature Publishing Group | 2015-02A plethora of technological applications justify why titanium dioxide is probably the most studied oxide, and an optimal exploitation of its properties quite frequently requires a controlled modification of the surface. Low-energy ion bombardmen[...]texto impreso
Nemes, Norbert Marcel ; Calderón, M. J. ; Beltrán Jiménez, José ; Bruno, F. Y. ; Garcia Barriocanal, Javier ; Sefrioui, Zouhair ; León Yebra, Carlos ; Gárcia Hernández, M. ; Muñoz, M. C. ; Brey, L. ; Santamaría Sánchez-Barriga, Jacobo | Wiley-V C H Verlag Gmbh | 2014-11-26The magnetoresistance of La0.7Sr0.3MnO3/SrTiO3La0.7Sr0.3MnO3/SrTiO3 superlattices with magnetic field rotating out-of-plane shows unexpected peaks for in-plane fields. Resistivity calculations with spin–orbit coupling reveal that orbital reconst[...]texto impreso
We present ab initio density-functional theory (DFT) calculations of the structure and stability of the monoclinic (m), tetragonal (t) and cubic (c) phases of HfO_(2) and of the stability and the structural, electronic, and magnetic properties o[...]texto impreso
Muñoz, M. C. ; Chico, L. ; López-Sancho, M. P. ; Beltrán Finez, Juan Ignacio ; Gallego, S. ; Cerdá, J. | IOP publishing ltd | 2006The symmetry underlying the geometric structure of materials determines most of their physical properties. In low dimensional systems the role of symmetry is enhanced and can give rise to new phenomena. Here, we report on unexpected magnetism in[...]
