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Bias dependence of spin injection into GaAs from Fe, FeCo, and (Ga,Mn)As contacts

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Endres, Bernhard ; Hoffmann, Frank ; Wolf, Christian ; Einwanger, Andreas ; Utz, Martin ; Schuh, Dieter ; Woltersdorf, Georg ; Ciorga, Mariusz ; Weiss, Dieter ; Back, Christian ; Bayreuther, Günther
License: Allianz- bzw. Nationallizenz
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Date of publication of this fulltext: 30 Mar 2011 06:06


Spin injection from Fe(001) and (Ga,Mn)As(001) into n-GaAs(001) was investigated using a method which provides two-dimensional cross-sectional images of the spin polarization in GaAs. While the distribution of the spin polarization below the injecting contact is nearly uniform for (Ga,Mn)As, a strong confinement near the contact edge is observed for Fe and FeCo. The spin polarization in GaAs ...


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