Spin sensitive bleaching and monopolar spin orientation in quantum wells

Details Spin sensitive bleaching and monopolar spin orientation in quantum wells Spin sensitive bleaching and monopolar spin orientation in quantum wells

2001-07-23

arxiv.org/abs/cond-mat/0107466v2

Physics

Condensed Matter

Figures have been updated due to technical printing problems (Postscript mismatch)

Scientific paper

10.1103/PhysRevLett.88.057401

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.

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