Temperature dependent asymmetry of the nonlocal spin-injection resistance: evidence for spin non-conserving interface scattering

Details Temperature dependent asymmetry of the nonlocal spin-injection resistance: evidence for spin non-conserving interface scattering Temperature dependent asymmetry of the nonlocal spin-injection resistance: evidence for spin non-conserving interface scattering

2005-04-08

arxiv.org/abs/cond-mat/0504201v2

Phys. Rev. Lett. 94, 176601 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures, accepted for publication in PRL, minor corrections (affiliation, acknowledgements, typo)

Scientific paper

10.1103/PhysRevLett.94.176601

We report nonlocal spin injection and detection experiments on mesoscopic Co-Al2O3-Cu spin valves. We have observed a temperature dependent asymmetry in the nonlocal resistance between parallel and antiparallel configurations of the magnetic injector and detector. This strongly supports the existence of a nonequilibrium resistance that depends on the relative orientation of the detector magnetization and the nonequilibrium magnetization in the normal metal providing evidence for increasing interface spin scattering with temperature.

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