Terahertz radiation-induced magnetoresistance oscillations of a high-density and high-mobility two-dimensional electron gas

Autor: A. K. Bakarov, P. Vierling, Vassilij Belkov, Sergey Danilov, Sergey Ganichev, A. I. Toropov, D. A. Kozlov, Sebastian Stachel, D. V. Dmitriev, Christina Zoth, Z. D. Kvon
Rok vydání: 2013
Předmět:
Zdroj: JETP Letters. 97:41-44
ISSN: 1090-6487
0021-3640
DOI: 10.1134/s0021364013010049
Popis: The terahertz response of a high-density and high-mobility two-dimensional electron gas in 13-nm GaAs quantum wells at frequencies of 0.7 and 1.63 THz has been investigated. Terahertz radiation-induced magnetoresistance oscillations have been discovered. The oscillation maxima coincide with the harmonics of cyclotron resonance. It has been shown that a large number of harmonics (up to the ninth) appear under irradiation at a frequency of 0.7 THz. In this case, the effect is the analogue of microwave-induced oscillations. At a higher frequency, the oscillation amplitude decreases drastically with an increase in the harmonic number. This indicates a transition to the regime of ordinary cyclotron harmonics.
Databáze: OpenAIRE