RT Journal Article
T1 Ferromagnetic proximity effect in a-Co_xSi_(1-x)/Nb bilayers: Role of magnetic disorder and interface transparency
A1 Perez de Lara, D.
A1 González Herrera, Elvira María
A1 Vicent López, José Luis
AB The superconducting and magnetic properties of a-Co_(x)Si_(1−x) /Nb bilayers have been studied as a function of Co content in order to analyze the superconducting/ferromagnetic proximity effect in a system with strong disorder in the magnetic layers. As Co atoms become more diluted, the magnetization of the amorphous a-CoxSi1−x alloy decreases gradually, whereas their resistivity increases and enters in a weak localization regime. The superconducting transition temperatures of the a-Co_(x)Si_(1−x) /Nb bilayers follow a decreasing trend as Co content is reduced, reaching the lowest value at the boundary between the ferromagnetic-nonmagnetic amorphous phases. These results can be understood in terms of the increase in interface transparency together with the changes in the spin-flip scatterin.
PB American Physical Society
SN 1098-0121
YR 2010
FD 2010-11-19
LK https://hdl.handle.net/20.500.14352/42676
UL https://hdl.handle.net/20.500.14352/42676
LA eng
NO ©2010 The American Physical Society.Artículo firmado por mas de diez autores.Work supported by Spanish MICINN Grants No. FIS2008-06249, No. HP2008-0032, and Consolider No. CSD2007-00010, CAM under Grant No. S2009/MAT-1726, UCM-Santander under Grant No. GR58-08, Asturias FICYT IB08-106 and BP06-109, and CRUP of Portugal Grant No. E41/09 in the framework of the Spanish-Portuguese Integrated Action. G.N.K. acknowledges support from FCT of Portugal through the “Ciencia 2007” program. We acknowledge L. Fernandez-Seivane for help with data acquisition software.
NO Ministerio de Ciencia e Innovación (MICINN)
NO Comunidad de Madrid
NO Universidad Complutense de Madrid/Banco de Santander
NO Asturias FICYT
NO CRUP of Portugal
NO FCT of Portugal
DS Docta Complutense
RD 20 abr 2025