Physics of Complex Materials Group


Complutense University of Madrid

Major research lines

Fabrication and study of thin films, nanostructures and heterostructures of correlated oxides with special emphasis on magnetism, superconductivity and interface effects.
Magneto-impedance and dielectric spectroscopy with emphasis on the study of magnetoelectric coupling mechanisms and ion diffusion dynamics.

Recent news and updates

In operando evidence of deoxygenation in ionic liquid gating of YBa2Cu3O7-X

Ana M. Perez-Muñoz, Pedro Schio, Roberta Poloni, Alejandro Fernandez-Martinez, Alberto Rivera-Calzada, Julio C. Cezar, Eduardo Salas-Colera, German R. Castro, Joseph Kinney, Carlos Leon, Jacobo Santamaria, Javier Garcia-Barriocanal, and Allen M. Goldman

Note

Magnetic field influence on the proximity effect at YBa2Cu3O7/La2/3Ca1/3MnO3 superconductor/half-metal interfaces

C. Visani, F. Cuellar, A. Perez-Munoz, Z. Sefrioui, C. León, J. Santamaría, and J. E. Villegas


Proximity Driven Commensurate Pinning in YBa2Cu3O7 through All-Oxide Magnetic Nanostructures

M. Rocci, J. Azpeitia, J. Trastoy, A. Perez-Muñoz, 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, y J. Santamaria


Formation of ​titanium monoxide (001) single-crystalline thin film i nduced by ion bombardment of ​titanium dioxide (110)

B.M. Pabón, J.I. Beltrán, G. Sánchez-Santolino, I. Palacio, J. López-Sánchez, J. Rubio-Zuazo, J.M. Rojo, P. Ferrer, A. Mascaraque, M.C. Muñoz, M. Varela, G.R. Castro & O. Rodríguez de la Fuente


Paving the way to nanoionics: atomic origin of barriers for ionic transport through interfaces

M. A. Frechero , M. Rocci, G. Sánchez-Santolino, Amit Kumar, J. Salafranca, Rainer Schmidt, M. R. Díaz-Guillén, O. J. Durá, A. Rivera-Calzada, R. Mishra, Stephen Jesse, S. T. Pantelides, Sergei V. Kalinin, M. Varela, S. J. Pennycook, J. Santamaria y C. Leon


Phase separation enhanced magneto-electric coupling in La0.7Ca0.3MnO3/BaTiO3 ultra-thin films

A. Alberca, C. Munuera, J. Azpeitia, B. Kirby, N. M. Nemes, A. M. Perez-Muñoz, J. Tornos, F. J. Mompean, C. Leon, J. Santamaria, M. Garcia-Hernandez

Insight into spin transport in oxide heterostructures from interface-resolved magnetic mapping

F.Y. Bruno, M.N. Grisolia, C. Visani, S. Valencia, M. Varela, R. Abrudan, J. Tornos,A. Rivera-Calzada, A.A. U¨ nal, S.J. Pennycook, Z. Sefrioui, C. Leon, J.E. Villegas, J. Santamaria, A. Barthelemy y M. Bibes.

Signatures of a two-dimensional ferromagnetic electron gas at the La0.7Sr0.3MnO3/SrTiO3 interface arising from orbital reconstruction

Norbert Nemes; Maria Jose Calderon; Juan Ignacio Beltran; Flavio Bruno; Javier Garcia-Barriocanal; Zouhair Sefrioui; Carlos Leon; Mar Garcia-Hernandez; Carmen Muñoz; Luis Brey; Jacobo Santamaria

Research highlights

The group started in 1998. In the last 10 years we have put a continued effort on the physics of complex oxides interfaces. Materials include colossal magnetoresistance manganites, high Tc superconducting cuprates, Mott and band insulators, and solid electrolytes. Structures and devices are superlattices, magnetic tunnel junctions, and planar nanostructures for lateral transport fabricated by optical and e-beam lithography.

INSIGHT INTO SPIN TRANSPORT IN OXIDE HETEROSTRUCTURES FROM INTERFACE-RESOLVED MAGNETIC MAPPING

Nat. Commun. 6:6306 DOI: 10.1038/ncomms7306 (2015)

COMPETITION BETWEEN COVALENT BONDING AND CHARGE TRANSFER AT COMPLEX-OXIDE INTERFACES

Physical Review Letters 112, 196802 DOI: 10.1103/PhysRevLett.112.196802 (2014)

REVERSIBLE ELECTRIC-FIELD CONTROL OF MAGNETIZATION AT OXIDE INTERFACES

Nature Commun. 5:4215 DOI: 10.1038/ncomms5215 (2014)

ELECTRON DOPING BY CHARGE TRANSFER AT LAFEO3/SM2CUO4 EPITAXIAL INTERFACES

Adv. Mat. 25, 1468 (2013)

EQUAL-SPIN ANDREEV REFLECTION AND LONG RANGE COHERENT TRANSPORT IN HIGH-TEMPERATURE SUPERCONDUCTOR/HALF-METALLIC FERROMAGNET JUNCTIONS

Nature Physics 8, 539 DOI:10.1038/nphys2318 (2012)

TAILORING INTERFACE STRUCTURE IN HIGHLY STRAINED YSZ/STO HETEROSTRUCTURES

Adv. Mat. 23, 5268 (2011)

INTERFACE RECONSTRUCTION AT LCMO/YBCO/LCMO HETEROSTRUCTURES

Phys. Rev. B 84, 060405 (R) (2011)

LOW DIMENSIONAL MAGNETISM DUE TO SPIN AND ORBITAL ELECTRONIC RECONSTRUCTION IN LAMNO3/SRTIO3 INTERFACES

Nature Comm. 1: 82, (2010)

SPIN TRANSPORT IN ALL-MANGANITE MAGNETIC TUNNEL JUNCTIONS

Advanced Materials 22, 5029 (2010)

ENHANCED IONIC CONDUCTIVITY AT YSZ/STO INTERFACES

Science 321, 676 (2008)