Scanning tunneling spectroscopy of the superconducting proximity effect in a diluted ferromagnetic alloy -: art. no. 024511

被引：37
|
作者：
Crétinon, L
Gupta, AK
Sellier, H
Lefloch, F
Fauré, M
Buzdin, A
Courtois, H
机构：
[1] CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble, France
[2] Univ Grenoble 1, F-38042 Grenoble, France
[3] CEA, Dept Rech Fondamentale Mat Condensee, F-38054 Grenoble, France
[4] CNRS, F-38054 Grenoble, France
来源：
PHYSICAL REVIEW B | 2005年 / 72卷 / 02期
关键词：
D O I：
10.1103/PhysRevB.72.024511
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We studied the proximity effect between a superconductor (Nb) and a diluted ferromagnetic alloy (CuNi) in a bilayer geometry. We measured the local density of states on top of the ferromagnetic layer, where thickness varies on each sample, with a very low temperature scanning tunneling microscope. The measured spectra display a very high homogeneity. The analysis of the experimental data shows the need to take into account an additional scattering mechanism. By including in the Usadel equations the effect of the spin relaxation in the ferromagnetic alloy, we obtain a good description of the experimental data.
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页数：6
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