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

URN to cite this document:: urn:nbn:de:bvb:355-epub-347588
DOI to cite this document:: 10.5283/epub.34758

Shiogai, Junichi ; Ciorga, Mariusz ; Utz, Martin ; Schuh, Dieter ; Arakawa, T. ; Kohda, M. ; Kobayashi, K. ; Ono, T. ; Wegscheider, W. ; Weiss, Dieter

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Date of publication of this fulltext: 24 Oct 2016 14:10

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Abstract

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 ...