Removal of spin degeneracy in SiGe-based nanostructures

Ganichev, Sergey and Rössler, Ulrich and Prettl, Wilhelm and Ivchenko, Eougenious and Belkov, Vassilij and Neumann, Richard and Brunner, K. and Abstreiter, Gerhard (2002) Removal of spin degeneracy in SiGe-based nanostructures. In: Alferov, Zhores I. and Esaki, Leo, (eds.) 10th International Symposium on Nanostructures: Physics and Technology. SPIE proceedings series, 5023. SPIE, Bellingham, Washington, p. 169. ISBN 0-8194-4824-9.

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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.

Item Type:Book Section
Institutions: Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev
Identification Number:
ValueType
10.1117/12.513609DOI
Subjects:500 Science > 530 Physics
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Owner:Christoph Drexler
Deposited On:05 Oct 2007
Last Modified:17 Nov 2009 05:05
Item ID:2190
Owner Only: item control page