2024-03-28T07:58:16Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/438592020-11-25T10:37:34Zcom_10261_28457com_10261_3col_10261_28462
Alija, Alejandro
Pérez de Lara, D.
González, Elvira M.
Kakazei, G. N.
Sousa, J. B.
Araújo, J. P.
Hierro-Rodríguez, A.
Martín, José Ignacio
Alameda, J. M.
Vélez, María
2012-01-02T10:35:01Z
2012-01-02T10:35:01Z
2010
Physical Review B 82(18): 184529 (2010)
0163-1829
http://hdl.handle.net/10261/43859
10.1103/PhysRevB.82.184529
http://dx.doi.org/10.13039/501100004837
http://dx.doi.org/10.13039/501100008430
http://dx.doi.org/10.13039/501100001871
http://dx.doi.org/10.13039/100010784
http://dx.doi.org/10.13039/100012818
The superconducting and magnetic properties of a-CoxSi1−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-CoxSi1−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 scattering term as magnetic disorder increases and the amorphous a-CoxSi1−x
layers loose their magnetic character.
eng
https://creativecommons.org/licenses/by/4.0/
openAccess
Ferromagnetic proximity effect in a-CoxSi1−x/Nb bilayers: Role of magnetic disorder and interface transparency
artículo