Spin relaxation times of two-dimensional holes from spin sensitive bleaching of intersubband absorption

DOI to cite this document:: 10.5283/epub.11804

Schneider, Petra ; Kainz, Josef ; Ganichev, Sergey ; Danilov, Sergey ; Rössler, Ulrich ; Wegscheider, Werner ; Weiss, Dieter ; Prettl, Wilhelm ; Belkov, Vassilij ; Glazov, M. ; Golub, Leonid E. ; Schuh, Dieter

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Date of publication of this fulltext: 11 Jan 2010 13:06

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Abstract

We present spin relaxation times of two-dimensional holes obtained by spin sensitive bleaching of the absorption of infrared radiation in p-type GaAs/AlGaAs quantum wells (QWs). It is shown that the saturation of intersubband absorption of circularly polarized radiation is mainly controlled by the spin relaxation time of the holes. The saturation behavior has been determined for different QW ...