High-frequency response of a two-dimensional electron system under microwave irradiation

Abstract

In this paper, the high-frequency (f = 0.05-10 GHz) magnetoresistance of a two-dimensional electron system is studied in the regime of microwave-induced resistance oscillations (MIRO). For this purpose, we employed a technique based on measuring the attenuation of a broadband coplanar transmission line placed on the sample surface, with the sample simultaneously being subjected to external microwave irradiation of frequency F = 40-140 GHz. In the f 1 GHz probe frequency range, the coplanar waveguide transmission exhibits several features that repeat the MIRO measured on the same sample using the conventional dc transport technique. At higher probe signal frequencies f , the MIRO features in transmission are significantly suppressed. In particular, for a microwave irradiation frequency of F = 80 GHz, the first two features of the waveguide transmission decrease by an order of magnitude at f 1 = 3.0 GHz and f 2 = 1.5 GHz, respectively.

Microwave-dressed electron–impurity interaction in a two-dimensional electron gas system under intense microwave radiation fields and weak magnetic fields

“…In particular, transport under microwave (MW) radiation field in high mobility 2DEGs revealed many intriguing and unexpected phenomena, of which MW-radiation induced magnetoresistance oscillations (MIRO) [3][4][5][6] and associated zeroresistance states (ZRS) [7,8] are probably the most striking manifestation. Therefore, nonequilibrium transport phenomena such as MIRO, ZRS, HIRO (Hall field-induced resistance oscillations) [9] and ZdRS (Zero-differential resistance states) [10], to mention but a few, in high-purity 2DEGs subjected simultaneously to MW radi-E-mail addresses: wywang2014@sina.cn (W.Y.…”

Zener tunneling between Landau orbits in two-dimensional electron Corbino rings

“…1,2 The phenomenon was predicted more than four decades ago 3 but still is the target of intensive investigations. [4][5][6][7][8][9][10] Another fundamental nonlinear phenomenon, occurring at large filling factors, was found in a response of 2D electrons to dc bias excitation. 11 Oscillations of differential resistance were found in the Hall bar samples.…”