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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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|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||05 Oct 2007|
|Last Modified:||17 Nov 2009 04:05|