Abstract
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 τs becomes 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.
Original language | English |
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Pages (from-to) | 100-102 |
Number of pages | 3 |
Journal | Journal of Magnetism and Magnetic Materials |
Volume | 240 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 2002 Feb |
Externally published | Yes |
Keywords
- Magnetoresistance
- Spin injection
- Spin-relaxation
- Tunneling
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics