Optical investigation of electrical spin injection into an inverted two-dimensional elctron gas structure

URN to cite this document:: urn:nbn:de:bvb:355-epub-350558
DOI to cite this document:: 10.5283/epub.35055

Buchner, Martin ; Kuczmik, Thomas ; Oltscher, Martin ; Ciorga, Mariusz ; Korn, Tobias

; Loher, Josef ; Schuh, Dieter ; Schüller, Christian ; Bougeard, Dominique ; Weiss, Dieter

; Back, Christian

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Date of publication of this fulltext: 16 Jan 2017 14:36

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Abstract

We report on electrical spin injection from (Ga, Mn) As into a high-mobility two-dimensional electron gas confined at an (Al, Ga) As/GaAs interface. Besides standard nonlocal electrical detection, we use amagneto-optical approach which provides cross-sectional images of the spin accumulation at the cleaved edge of the sample, yielding spin decay lengths on the order of 2 mu m. In some cases we ...