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Proceedings Paper

Removal of spin degeneracy in SiGe-based nanostructures
Author(s): Sergey D. Ganichev; U. Roessler; Wilhelm Prettl; E. L. Ivchenko; Vassilij V. Bel'kov; R. Neumann; K. Brunner; Gerhard Abstreiter
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Paper Abstract

The photogalvanic effects, which require a system lacking inversion symmetry, become possible in SiGe based quantum well (QW) structures due to their built-in asymmetry. We report on the removal of spin degeneracy in the k-space of SiGe nanostructures. This is concluded from the observations of the circular photogalvanic effect induced by infrared radiation in asymmetric p-type QWs. We discuss possible mechanisms that give rise to spin-splitting of the electronic subband states.

Paper Details

Date Published: 11 June 2003
PDF: 3 pages
Proc. SPIE 5023, 10th International Symposium on Nanostructures: Physics and Technology, (11 June 2003); doi: 10.1117/12.513609
Show Author Affiliations
Sergey D. Ganichev, Univ. Regensburg and A.F. Ioffe Physico-Technical Institute (Russia)
U. Roessler, Univ. Regensburg (Germany)
Wilhelm Prettl, Univ. Regensburg (Germany)
E. L. Ivchenko, A.F. Ioffe Physico-Technical Institute (Russia)
Vassilij V. Bel'kov, A.F. Ioffe Physico-Technical Institute (Russia)
R. Neumann, Technische Univ. Muenchen (Germany)
K. Brunner, Technische Univ. Muenchen (Germany)
Gerhard Abstreiter, Univ. Regensburg (Germany)

Published in SPIE Proceedings Vol. 5023:
10th International Symposium on Nanostructures: Physics and Technology
Zhores I. Alferov; Leo Esaki, Editor(s)

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