Temperature-dependent asymmetry of the nonlocal spin-injection resistance: evidence for spin nonconserving interface scattering.

نویسندگان

  • Samir Garzon
  • Igor Zutić
  • Richard A Webb
چکیده

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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عنوان ژورنال:
  • Physical review letters

دوره 94 17  شماره 

صفحات  -

تاریخ انتشار 2005