RT Journal Article
T1 Magnetic field influence on the proximity effect at YBa_(2)Cu_(3)O_(7)/La_(2/3)Ca_(1/3)MnO_(3) superconductor/half-metal interfaces
A1 Visani, C.
A1 Cuéllar Jiménez, Fabian Andrés
A1 Pérez Muñoz, Ana Mª
A1 Sefrioui, Zouhair
A1 León Yebra, Carlos
A1 Santamaría Sánchez-Barriga, Jacobo
A1 Villegas, Javier E.
AB We 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 magnetic-field dependence of the spectroscopic signatures that evidence the long-range penetration of superconducting correlations into the half-metal. Those signatures are insensitive to the applied field when this is below the ferromagnet’s saturation fields, which demonstrates that they are uncorrelated with its macroscopic magnetization. However, the application of more intense fields progressively washes away the fingerprint of long-range proximity effects. This is consistent with the fact that the well-known magnetic inhomogeneities at the c-axis YYBa_(2)Cu_(3)O_(7)/La_(2/3)Ca_(1/3)MnO_(3) interface play a role in the proximity behavior.
PB American Physical Society
SN 1098-0121
YR 2015
FD 2015-07-31
LK https://hdl.handle.net/20.500.14352/24178
UL https://hdl.handle.net/20.500.14352/24178
LA eng
NO © 2015 American Physical Society. Work at the Unite Mixté de Physique CNRS/Thales was supported by the French ANR (Contract JCJC “SUPERHYBRIDS-II”) and FP7 Marie Curie Actions “PIXIE.” Research at UCM was supported by Spanish MINECO through Grant No. MAT2014-52405-C02-01. J.S. acknowledges the CNRS “Institut de Physique” for supporting his visiting position at the Unité Mixte de Physique  CNRS/Thales.
NO Unión Europea. FP7
NO Ministerio de Economía y Competitividad (MINECO)
NO French ANR
DS Docta Complutense
RD 28 dic 2025