Meservey-Tedrow effect in ferromagnet/superconductor/ferromagnet double tunnel junctions

被引：3
作者：
Bergmann, G [1 ]
Lu, J
Wang, DW
机构：
[1] Univ So Calif, Dept Phys, Los Angeles, CA 90089 USA
[2] Univ Calif Irvine, Dept Mat Sci, Irvine, CA 92697 USA
[3] Univ Calif Irvine, Dept Elect Engn, Irvine, CA 92697 USA
来源：
PHYSICAL REVIEW B | 2005年 / 71卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.71.134521
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Double tunneling junctions of ferromagnet-superconductor-ferromagnet electrodes (FSF) show a step in the conductance when a parallel magnetic field reverses the magnetization of one of the ferromagnetic electrodes. This change is generally attributed to the spin-valve effect or to pair breaking in the superconductor due to spin accumulation. In this paper it is shown that the Meservey-Tedrow effect causes a similar change in the conductance since the magnetic field changes the energy spectrum of the quasiparticles in the superconductor. A reversal of the bias reverses the sign in the conductance jump.
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页数：6
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