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Dynamic nuclear spin polarization in an all-semiconductor spin injection device with (Ga,Mn)As/n-GaAs spin Esaki diode

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Shiogai, Junichi ; Ciorga, Mariusz ; Utz, Martin ; Schuh, Dieter ; Arakawa, T. ; Kohda, M. ; Kobayashi, K. ; Ono, T. ; Wegscheider, W. ; Weiss, Dieter
License: Allianz- bzw. Nationallizenz
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Date of publication of this fulltext: 24 Oct 2016 14:10


We investigate the dynamic nuclear spinpolarization in an n-GaAs lateral channel induced by electrical spin injection from a (Ga,Mn)As/n-GaAs spin Esaki diode. Signatures of nuclear spinpolarization are studied in both three-terminal and non-local voltage signals, where a strong electron spin depolarization feature is observed close to zero magnetic field. This is due to the large nuclear field ...


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