Sizov, F. and Tsybrii, Z. and Danilov, S. and Mikhailov, N. and Dvoretsky, S. and Gumenjuk-Sichevska, J. (2021) THz polarization-dependent response of antenna-coupled HgCdTe photoconductors under an external constant electric field. SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 36 (10): 105009. ISSN 0268-1242, 1361-6641
Full text not available from this repository. (Request a copy)Abstract
The photoresponse of antenna-coupled Hg1-xCdxTe (x approximate to 0.201) narrow-gap epitaxially grown photoconductors with normal band ordering having large spin-orbit coupling and being irradiated by the normal to the photoconductor surface terahertz (THz) radiation (linearly or circularly polarized), is investigated at T = 80 and 300 K. The oscillations of polarized photoresponse in biased and unbised structures were revealed. In experiments, Hg1-xCdxTe layers (point group 43m (T-d)) grown on (013) GaAs substrates were used. In biased structures, to the ordinary charge current and Rashba spin splitting current in zero electric field, an additional polarized current, which grows with the external electric field strength, arises. Presumably, the oscillating photoresponses under polarized THz radiation in these unbiased and biased structures are connected with the circular and linear photogalvanic effects without and with an external electric field. The observed features of the polarized dependent photoresponse can be important for spintronics applications at elevated temperatures.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | INTER-BAND EXCITATION; SPIN; narrow-gap HgCdTe; THz and IR antenna-coupled photoconductor; linear and circular radiation polarizations; polarization-dependent response |
| 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: | 01 Sep 2022 09:16 |
| Last Modified: | 01 Sep 2022 09:16 |
| URI: | https://pred.uni-regensburg.de/id/eprint/47192 |
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