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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, E. and Neumann, Richard and Brunner, K. and Abstreiter, Gerhard (2003) Spin-Photocurrent in p-SiGe quantum wells under terahertz laser irradiation. Journal of Superconductivity 16 (2), pp. 415-418.

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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
Institutions:Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Wilhelm Prettl
Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev
Physics > Institute of Theroretical Physics > Retired Professors > Group Ulrich Rössler
Projects:Forschergruppe Ferromagnet-Halbleiter Nanostrukturen
Identification Number:
Keywords:SiGe-QWs; photogalvanic effect; Rashba term.
Subjects:500 Science > 530 Physics
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Deposited On:20 Mar 2007
Last Modified:13 Mar 2014 09:51
Item ID:1333
Owner Only: item control page


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