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Microwave-induced zero-resistance states and second-harmonic generation in an ultraclean two-dimensional electron gas

机译:超净二维电子气中微波诱导的零电阻态和二次谐波的产生

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摘要

The microwave-induced resistance oscillations and "zero-resistance" states were discovered in ultraclean two-dimensional electron systems in 2001-2003 and have attracted great interest from researchers. A comprehensive theory of these phenomena was developed in 2011: It was shown that all experimentally observed dependencies can be naturally explained by the influence of the ponderomotive forces which arise in the near-contact regions of the two-dimensional electron gas under the action of microwaves. Now, we show that the same near-contact physical processes should lead to another nonlinear electrodynamic phenomenon: the second-harmonic generation. We calculate the frequency, magnetic field, mobility, and power dependencies of the second-harmonic intensity and show that it can be as large as (≥)0.5 mW/cm~2 under realistic experimental conditions. A part of this paper is devoted to a further development of the ponderomotive-force theory: we show how it explains different experimental details, including those which were not known in 2011.
机译:微波诱导的电阻振荡和“零电阻”状态是在2001-2003年在超净二维电子系统中发现的,引起了研究人员的极大兴趣。这些现象的综合理论在2011年得到发展:表明所有实验观察到的依赖性可以自然地解释为在微波作用下在二维电子气的近接触区中产生的质动力的影响。 。现在,我们表明相同的近接触物理过程应导致另一种非线性电动力学现象:二次谐波产生。我们计算了二次谐波强度的频率,磁场,迁移率和功率相关性,并表明在实际实验条件下,二次谐波强度可能高达(≥)0.5 mW / cm〜2。本文的一部分致力于质动力理论的进一步发展:我们展示了它如何解释不同的实验细节,包括2011年未知的细节。

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  • 来源
    《Physical review》 |2014年第4期|045410.1-045410.11|共11页
  • 作者

    S. A. Mikhailov;

  • 作者单位

    Institute of Physics, University of Augsburg, D-86135 Augsburg, Germany;

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  • 正文语种 eng
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