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Detection of current-induced spins by ferromagnetic contacts

Inanc Adagideli·Gerrit E. W. Bauer·Bertrand I. Halperin
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Abstract

Detection of current-induced spin accumulation via ferromagnetic contacts is discussed. Onsager's relations forbid that in a two-probe configuration spins excited by currents in time-reversal symmetric systems can be detected by switching the magnetization of a ferromangetic detector contact. Nevertheless, current-induced spins can be transferred as a torque to a contact magnetization and affect the charge currents in many-terminal configurations. We demonstrate the general concepts by solving the microscopic transport equations for the diffuse Rashba system with magnetic contacts.

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Inanc Adagideli, Gerrit E. W. Bauer, Bertrand I. Halperin. 2006-12-14. Detection of current-induced spins by ferromagnetic contacts. https://doi.org/10.1103/physrevlett.97.256601

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