Spin-relaxation and magnetoresistance in FM/SC/FM tunnel junctions
Spin-relaxation and magnetoresistance in FM/SC/FM tunnel junctions
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DOI：
10.1016/s0304-8853(01)00714-4
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发表时间：
2001-07
影响因子：
2.7
通讯作者：
S. Takahashi;T. Yamashita;H. Imamura;S. Maekawa
中科院分区：
文献类型：
--
作者：
S. Takahashi;T. Yamashita;H. Imamura;S. Maekawa
The effect of spin relaxation on tunnel magnetoresistance (TMR) in a ferromagnet/superconductor/ferromagnet (FM/SC/FM) double tunnel junction is theoretically studied. The spin accumulation in SC is determined by balancing of the spin-injection rate and the spin-relaxation rate. In the superconducting state, the spin-relaxation time τsbecomes longer with decreasing temperature, resulting in a rapid increase of TMR. The TMR of FM/SC/FM junctions provides a useful probe to extract information about spin-relaxation in superconductors.
