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Spin-photocurrent in p-SiGe quantum wells under terahertz laser irradiation

Belkov, Vassilij, Ganichev, Sergey, Schneider, Petra, Schowalter, D., Rössler, Ulrich, Prettl, Wilhelm, Ivchenko, Eougenious, Neumann, Richard, Brunner, K. and Abstreiter, Gerhard (2003) Spin-photocurrent in p-SiGe quantum wells under terahertz laser irradiation. Journal of Superconductivity: Incorporating Novel Magnetism 16 (2), pp. 415-418.

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Date of publication of this fulltext: 05 Aug 2009 13:37

Other URL: http://www.physik.uni-regensburg.de/forschung/ganichev/reprints/superconductivity02sige.pdf


A detailed study of the circular photogalvanic effect (CPGE) in SiGe structures is presented. It is shown that the CPGE becomes possible because of the built-in asymmetry of quantum wells (QWs) in compositionally stepped samples and in asymmetrically doped structures. The photocurrent arises due to optical spin orientation of free carriers in QWs with spin splitting in k-space. It is shown that ...


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Item type:Article
Date:April 2003
Institutions:Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev
Keywords:SiGe-QWs; photogalvanic effect; Rashba term
Dewey Decimal Classification:500 Science > 530 Physics
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Item ID:2172
Owner only: item control page


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