| Autor: |
Joachim Puls, S. Halm, E. Neshataeva, Werner Keune, Fritz Henneberger, Tilmar Kümmell, Gerd Bacher, E. Schuster, F. Seifert |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings. |
| ISSN: |
0094-243X |
| DOI: |
10.1063/1.2730406 |
| Popis: |
Employing fringe fields from microscale Fe/Tb multilayer ferromagnets (FMs) with remanent out‐of‐plane magnetization, we are able to define a local, remanent carrier spin polarization in an underlying ZnCdMnSe dilute magnetic semiconductor quantum well (DMS QW). The fringe fields of the FMs “imprint” a locally varying magnetization into the DMS QW by orienting the magnetic moment of the incorporated Mn2+ ions. Optically excited charge carriers align their spin along the local DMS magnetization due to the s‐pd exchange interaction. Using polarization resolved, magnetic field dependent photoluminescence (PL) spectroscopy we demonstrate a remanent DMS carrier spin polarization of 5 % in the vicinity of ferromagnetic Fe/Tb wire structures. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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