RT Journal Article
T1 Emergent spin filter at the interface between ferromagnetic and insulating layered oxides
A1 Liu, Yaohua
A1 Cuéllar Jiménez, Fabian Andrés
A1 Sefrioui, Zouhair
A1 Freeland, J. W.
A1 Fitzsimmons, M. R.
A1 León Yebra, Carlos
A1 Santamaría Sánchez-Barriga, Jacobo
A1 te Velthuis, S. G. E.
AB We report a strong effect of interface-induced magnetization on the transport properties of magnetic tunnel junctions consisting of ferromagnetic manganite La_(0.7)Ca_(0.3)MnO_(3) and insulating cuprate PrBa_(2)Cu_(3)O_(7). Contrary to the typically observed steady increase of the tunnel magnetoresistance with decreasing temperature, this system exhibits a sudden anomalous decrease at low temperatures. Interestingly, this anomalous behavior can be attributed to the competition between the positive spin polarization of the manganite contacts and the negative spin-filter effect from the interface-induced Cu magnetization.
PB American Physical Society
SN 0031-9007
YR 2013
FD 2013-12-11
LK https://hdl.handle.net/20.500.14352/34772
UL https://hdl.handle.net/20.500.14352/34772
LA eng
NO ©  2013 American Physical Society. Work at Argonne National Laboratory and use of the Advanced Photon Source was supported by the U.S. Department of Energy, Office of Basic Energy Sciences under Contract No. DE-AC02-06CH11357. Work at UCM was supported by the Spanish MICINN through Grant No. MAT2011- 27470-C02, Consolider Ingenio 2010 - CSD2009-00013 (Imagine), and by CAM through Grant No. S2009/MAT- 1756 (Phama). This work has benefited from the use of the Lujan Neutron Scattering Center at LANSCE, which is funded by the Department of Energy’s Office of Basic Energy Sciences. Los Alamos National Laboratory is operated by Los Alamos National Security LLC under DOE through Contract No. DE-AC52-06NA25396.
NO Comunidad de Madrid
NO Ministerio de Ciencia en Innovación (MICINN)
NO U.S. Department of Energy, Office of Basic Energy Sciences
NO Los Alamos National Security LLC
DS Docta Complutense
RD 6 abr 2025