| Download ( PDF | 74kB) |
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.Date of publication of this fulltext: 05 Aug 2009 13:37
Article
DOI to cite this document: 10.5283/epub.2172
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 ...
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 the effect can be applied to probe the macroscopic in-plane symmetry of low dimensional structures and allowing to conclude on Rashba or Dresselhaus terms in the Hamiltonian.
Alternative links to fulltext
Involved Institutions
Details
| Item type | Article |
| Journal or Publication Title | Journal of Superconductivity: Incorporating Novel Magnetism |
| Volume: | 16 |
|---|---|
| Number of Issue or Book Chapter: | 2 |
| Page Range: | pp. 415-418 |
| 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 |
| Status | Published |
| Refereed | Yes, this version has been refereed |
| Created at the University of Regensburg | Yes |
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-21722 |
| Item ID | 2172 |
Export bibliographical data
Owner only: item control page
Download Statistics
Download Statistics