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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. und Abstreiter, Gerhard (2003) Spin-photocurrent in p-SiGe quantum wells under terahertz laser irradiation. Journal of Superconductivity: Incorporating Novel Magnetism 16 (2), S. 415-418.Veröffentlichungsdatum dieses Volltextes: 05 Aug 2009 13:37
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.2172
Zusammenfassung
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.
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| Dokumentenart | Artikel |
| Titel eines Journals oder einer Zeitschrift | Journal of Superconductivity: Incorporating Novel Magnetism |
| Band: | 16 |
|---|---|
| Nummer des Zeitschriftenheftes oder des Kapitels: | 2 |
| Seitenbereich: | S. 415-418 |
| Datum | April 2003 |
| Institutionen | Physik > Institut für Experimentelle und Angewandte Physik > Professor Ganichev > Arbeitsgruppe Sergey Ganichev |
| Stichwörter / Keywords | SiGe-QWs; photogalvanic effect; Rashba term |
| Dewey-Dezimal-Klassifikation | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Status | Veröffentlicht |
| Begutachtet | Ja, diese Version wurde begutachtet |
| An der Universität Regensburg entstanden | Ja |
| URN der UB Regensburg | urn:nbn:de:bvb:355-epub-21722 |
| Dokumenten-ID | 2172 |
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