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19 April 2024

» pubmed » pmid11863775

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Spin-sensitive bleaching and monopolar spin orientation in quantum wells
S D Ganichev ; S N Danilov ; V V Bel’kov ; E L Ivchenko ; M Bichler ; W Wegscheider ; D Weiss ; W Prettl ;
Date:	4 Feb 2002
Journal:	Phys Rev Lett, 88 (5), 057401
Abstract:	Spin-sensitive bleaching of the absorption of far-infrared radiation has been observed in p-type GaAs/AlGaAs quantum well structures. The absorption of circularly polarized radiation saturates at lower intensities than that of linearly polarized light due to monopolar spin orientation in the first heavy-hole subband. Spin relaxation times of holes in p-type material in the range of tens of ps were derived from the intensity dependence of the absorption.
Source:	PubMed, pmid11863775
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