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All-electrical measurements of direct spin Hall effect in GaAs with Esaki diode electrodes

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Ehlert, Markus ; Song, Cheng ; Ciorga, Mariusz ; Utz, Martin ; Schuh, Dieter ; Bougeard, Dominique ; Weiss, Dieter
Date of publication of this fulltext: 29 Nov 2012 14:42


We report on measurements of direct spin Hall effect in a lightly n-doped GaAs channel with conductivity below 2000 Ω−1 m−1. As spin detecting contacts, we employed highly efficient ferromagnetic Fe/(Ga,Mn)As/GaAs Esaki diode structures. We investigate bias and temperature dependence of the measured spin Hall signal and evaluate the value of total spin Hall conductivity and its dependence on ...


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