Nonlinear response of microwave-irradiated two-dimensional electron systems near the second harmonic of the cyclotron resonance

被引:16
|
作者
Hatke, A. T. [1 ]
Zudov, M. A. [1 ]
Pfeiffer, L. N. [2 ]
West, K. W. [2 ]
机构
[1] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA
[2] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA
基金
美国国家科学基金会;
关键词
ZERO-RESISTANCE STATES; PHOTOCONDUCTIVITY; OSCILLATIONS; EXCITATION; TRANSPORT; GAS;
D O I
10.1103/PhysRevB.83.201301
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Recent experiments onmicrowave-irradiated high-mobility two-dimensional electron systems [Dai et al., Phys. Rev. Lett. 105, 246802 (2010); Hatke et al., Phys. Rev. B 83, 121301(R) (2011)] 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 provide important constraints for further theoretical considerations.
引用
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页数:4
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