The transmission of spin-polarized electrons across free standing Au/Co/Au foils has been investigated. A larger transmission probability for electrons with their spin polarization P/spl I.oarr//sub 0/ parallel to the sample magnetization M/spl I.oarr/ than for electrons with P/spl I.oarr//sub 0/ antiparallel to M/spl I.oarr/ is found. By choosing P/spl I.oarr//sub 0/ perpendicular to M/spl I.oarr/ the spin polarization rotates into the direction of M/spl I.oarr/ and simultaneously also precesses around it. The precession around M/spl I.oarr/ is the electron analogue to the Faraday rotation observed with polarized light. It is caused by the spin dependence of the inner potential of the ferromagnetic Co film.
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机译：已经研究了自旋Au / Co / Au箔上自旋极化电子的传输。与自旋极化P / spl I.oarr // sub 0 /平行于样品磁化强度M / spl I.oarr /的电子相比，P / spl I.oarr // sub 0 /反平行于电子的电子具有更大的传输概率找到M / spl I.oarr /。通过选择垂直于M / spl I.oarr /的P / spl I.oarr // sub 0 /，自旋极化旋转到M / spl I.oarr /的方向，同时也绕其进动。 M / spl I.oarr /附近的进动是用偏振光观察到的法拉第旋转的电子类似物。这是由于铁磁Co膜的内部电势的自旋依赖性引起的。
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