Gradl, C. and Kempf, M. and Schuh, D. and Bougeard, D. and Winkler, R. and Schueller, C. and Korn, T. (2014) Hole-spin dynamics and hole g-factor anisotropy in coupled quantum well systems. PHYSICAL REVIEW B, 90 (16): 165439. ISSN 1098-0121, 1550-235X
Full text not available from this repository. (Request a copy)Abstract
Due to its p-like character, the valence band in GaAs-based heterostructures offers rich and complex spindependent phenomena. One manifestation is the large anisotropy of Zeeman spin splitting. Using undoped, coupled quantum wells (QWs), we examine this anisotropy by comparing the hole-spin dynamics for high-and low-symmetry crystallographic orientations of the QWs. We directly measure the hole g factor via time-resolved Kerr rotation, and for the low-symmetry crystallographic orientations (110) and (113a), we observe a large in-plane anisotropy of the hole g factor, in good agreement with our theoretical calculations. Using resonant spin amplification, we also observe an anisotropy of the hole-spin dephasing in the (110)-grown structure, indicating that crystal symmetry may be used to control hole-spin dynamics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | RELAXATION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Dominique Bougeard Physics > Institute of Experimental and Applied Physics > Chair Professor Lupton > Group Christian Schüller |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 09 Aug 2019 11:50 |
| Last Modified: | 09 Aug 2019 11:50 |
| URI: | https://pred.uni-regensburg.de/id/eprint/9331 |
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