Physics of Complex Materials Group

Complutense University of Madrid

ICMM-CSIC Associate Unit: Laboratory of heterostructures for Spintronics applications

Major research lines

Quantum matter. Correlated Oxides. nanoestructures and heterostructures, interface phenomena. Magnetism. Superconductivity.
Ion transport, oxygen vacancies. Dielectric Spectroscopy with emphasis on the study of magnetoelectric coupling.
Spintronics. Magnetic Tunnel Junctions based on Transition Metal Oxides. Domain Wall engineering: nanowires.

Recent news and updates

Jan 03, 2022   Photovoltaic sensing of a memristor based in LSMO/BTO/ITO ferroionic tunnel junctions

View on aip.scitation.org

I. Tenreiro, V. Rouco, G. Sánchez-Santolino, F. Gallego, C. Leon, A. Rivera-Calzada, I. K. Schuller, J. Santamaria. Appl. Phys. Lett. 120, 034101 (2022) doi: 10.1063/5.0071748

Dec 02, 2021   Extremely long-range, high-temperature Josephson coupling across a half-metallic ferromagnet

View on nature.com

D. Sanchez-Manzano, S. Mesoraca, F. 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. Gonzalez-Calbet, C. Leon, S. Valencia, C. Feuillet-Palma, N. Bergeal, A. Buzdin, J. Lesueur, J. Villegas and J. Santamaria. Nat. Mater. (2021). doi: 10.1038/s41563-021-01162-5

Dec 31, 2020   Controlled sign reversal of electroresistance in oxide tunnel junctions by electrochemical-ferroelectric coupling

View on journals.aps.org

D. Hernandez-Martin, F. Gallego, J. Tornos, V. Rouco, J.I. Beltran, C. Munuera, D. Sanchez-Manzano, M. Cabero, F. Cuellar, D. Arias, G. Sanchez-Santolino, F.J. Mompean, M. Garcia-Hernandez, A. Rivera-Calzada, S.J. Pennycook, M. Varela, M.C. Muñoz, Z. Sefrioui, C. Leon, J. Santamaria. Phys. Rev. Lett. 125 (26), 266802 , 2020. doi: 10.1103/PhysRevLett.125.266802

Jan 22, 2019   Ferroelectric control of interface spin filtering in multiferroic tunnel junctions

View it on journals.aps.org

J. Tornos, F. Gallego, S. Valencia, Yi Hua Liu, V. Rouco, V. Lauter, R. Abrudan, C. Luo, H. Ryll, Q. Wang, D. Hernandez-Martin, G. Orfila, M. Cabero, F. Cuellar, D. Arias, F.J. Mompean, M. Garcia-Hernandez, F. Radu, T.R. Charlton, A. Rivera-Calzada, Z. Sefrioui, SGE Te Velthuis, C. Leon, J. Santamaria. Phys. Rev. Lett. 122 (3), 037601 , 2019. doi: 10.1103/PhysRevLett.122.037601

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.

RESONANT ELECTRON TUNNELLING ASSISTED BY CHARGED DOMAIN WALLS IN MULTIFERROIC TUNNEL JUNCTIONS

Nat Nano 12, 655 (2017). doi: 10.1038/nnano.2017.51.

IN OPERANDO EVIDENCE OF DEOXYGENATION IN IONIC LIQUID GATING OF YBa2Cu3O7-x

Proc. Natl. Acad. Sci. USA 114, 215 (2017). doi: 10.1073/pnas.1613006114.

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 LAFEO 3/SM 2CUO 4 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 LAMNO 3/SRTIO 3 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)