Non-linear response of a high mobility two-dimensional electron system near the second harmonic of the cyclotron resonance

Details Non-linear response of a high mobility two-dimensional electron system near the second harmonic of the cyclotron resonance Non-linear response of a high mobility two-dimensional electron system near the second harmonic of the cyclotron resonance

2011-05-06

arxiv.org/abs/1105.1388v1

Physical Review B 83, 201301(R) (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.83.201301

Recent experiments on microwave-irradiated high-mobility two-dimensional electron systems revealed a novel photoresistivity peak in the vicinity of the second cyclotron resonance harmonic. Here we report on the nonlinear transport measurements and demonstrate that the peak can be induced by modest dc fields and that its position is not affected even by strong dc fields, in contrast to microwave-induced resistance oscillations that shift to higher magnetic fields. These findings reinforce the notion that the peak cannot be described by existing models and provides important constraints for further theoretical considerations.

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