Diehl, H. and Shalygin, V. A. and Golub, L. E. and Tarasenko, S. A. and Danilov, S. N. and Bel'kov, V. V. and Novik, E. G. and Buhmann, H. and Bruene, C. and Molenkamp, L. W. and Ivchenko, E. L. and Ganichev, S. D. (2009) Nonlinear magnetogyrotropic photogalvanic effect. PHYSICAL REVIEW B, 80 (7): 075311. ISSN 1098-0121,
Full text not available from this repository.Abstract
We report on the observation of magnetic-field-induced photocurrent in HgTe/HgCdTe quantum wells of different widths. Both the intrasubband and interband absorption of infrared/terahertz radiation in the heterostructures is shown to cause a dc electric current in the presence of an in-plane magnetic field. The photocurrent behavior upon variation in the radiation polarization, magnetic-field strength, and temperature is studied. At a moderate magnetic field the current exhibits a linear field dependence. At high magnetic fields, however, it becomes nonlinear and is dominated by a cubic in magnetic-field contribution. The latter effect is observed in quantum wells with the inverted band structure only. The experimental results are analyzed in terms of the phenomenological theory and microscopic models of magnetogyrotropic photogalvanic effect based on asymmetry of optical transitions and/or asymmetric relaxation of carriers in the momentum space. The effect is shown to be related to the gyrotropic properties of the structures. The developed theory of magnetogyrotropic photocurrent describes well all experimental results. It is shown that both intrasubband and interband optical transitions may lead to spin-related as well as to spin-independent magnetic-field-induced photocurrents.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HGTE QUANTUM-WELLS; 2-DIMENSIONAL ELECTRON-GAS; CYCLOTRON-RESONANCE; NANOSTRUCTURES; RASHBA; MICROSTRUCTURES; STATES; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 10 Sep 2020 08:45 |
| Last Modified: | 10 Sep 2020 08:45 |
| URI: | https://pred.uni-regensburg.de/id/eprint/28666 |
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