Herrmann, T. and Kvon, Z. D. and Dmitriev, I. A. and Kozlov, D. A. and Jentzsch, B. and Schneider, M. and Schell, L. and Bel'kov, V. V. and Bayer, A. and Schuh, D. and Bougeard, D. and Kuczmik, T. and Oltscher, M. and Weiss, D. and Ganichev, S. D. (2017) Magnetoresistance oscillations induced by high-intensity terahertz radiation. PHYSICAL REVIEW B, 96 (11): 115449. ISSN 2469-9950, 2469-9969
Full text not available from this repository.Abstract
We report on observation of pronounced terahertz radiation-induced magnetoresistivity oscillations in AlGaAs/GaAs two-dimensional electron systems, the terahertz analog of the microwave induced resistivity oscillations (MIRO). Applying high-power radiation of a pulsed molecular laser we demonstrate that MIRO, so far observed at low power only, are not destroyed even at very high intensities. Experiments with radiation intensity ranging over five orders of magnitude from 0.1 to 10(4)W/cm(2) reveal high-power saturation of the MIRO amplitude, which is well described by an empirical fit function I/(1 + I/I-s)(beta) with beta similar to 1. The saturation intensity Is is of the order of tens of watts per square centimeter and increases by a factor of 6 by increasing the radiation frequency from 0.6 to 1.1 THz. The results are discussed in terms of microscopic mechanisms of MIRO and compared to nonlinear effects observed earlier at significantly lower excitation frequencies.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 2-DIMENSIONAL ELECTRON-GAS; CYCLOTRON-RESONANCE; DEEP IMPURITIES; TUNNEL IONIZATION; PHOTOCONDUCTIVITY; HETEROSTRUCTURES; SEMICONDUCTORS; RELAXATION; RESISTANCE; SYSTEMS; |
| 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: | 14 Dec 2018 13:20 |
| Last Modified: | 28 Feb 2019 07:29 |
| URI: | https://pred.uni-regensburg.de/id/eprint/2159 |
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