期刊
PHYSICAL REVIEW B
卷 83, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.121301
关键词
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资金
- NSF [DMR-0654118, DMR-0548014]
- State of Florida
- DOE [DE-SC002567]
- University of Minnesota
We report the observation of a remarkably strong microwave photoresistivity effect in a high-mobility two-dimensional electron system subject to a weak magnetic field and low temperature. The effect manifests itself as a giantmicrowave-induced resistivity peak which, in contrast to microwave-induced resistance oscillations, appears only near the second harmonic of the cyclotron resonance and only at sufficiently high microwave frequencies. Appearing in the regime linear in microwave intensity, the peak can be more than an order of magnitude stronger than the microwave-induced resistance oscillations and can not be explained by existing theories.
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