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

Belkov, Vassilij and Ganichev, Sergey and Schneider, Petra and Schowalter, D. and Rössler, Ulrich and Prettl, Wilhelm and Ivchenko, Eougenious and Neumann, Richard and 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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Other URL: http://www.physik.uni-regensburg.de/forschung/ganichev/reprints/superconductivity02sige.pdf


Abstract

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
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:13 Mar 2014 10:15
Item ID:2172
Owner Only: item control page

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