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arXiv 1108.5328cond-mat.mes-hall
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二维电子系统中微波引起的电阻振荡和零电阻态

Microwave-induced resistance oscillations and zero-resistance states in 2D electron systems with two occupied subbands

Jesus Inarrea, Gloria Platero

摘要:

我们报告的理论研究,最近发现的微波引起的电阻振荡和零电阻状态的霍尔酒吧与两个占用的子带。在相同的结果中,电阻呈现出一种特殊的形状,似乎具有以前没有观察到的内在干涉效应。我们应用微波驱动的电子轨道模型,这意味着辐射驱动的二维电子系统的振荡。因此,我们计算不同的子带内和子带间的电子散射率和时间,揭示了不同的微波驱动的振荡频率的两个电子子带。通过散射,这些子带相关的振荡运动干涉,从而产生引人注目的阻力分布。我们还研究了辐照磁电阻与功率和温度的关系。计算结果与实验结果吻合较好。

英文摘要:

We report on theoretical studies of recently discovered microwave-induced resistance oscillations and zero resistance states in Hall bars with two occupied subbands. In the same results, resistance presents a peculiar shape which appears to have a built-in interference effect not observed before. We apply the microwave-driven electron orbit model, which implies a radiation-driven oscillation of the two-dimensional electron system. Thus, we calculate different intra and inter-subband electron scattering rates and times that are revealing as different microwave-driven oscillations frequencies for the two electronic subbands. Through scattering, these subband-dependent oscillation motions interfere giving rise to a striking resistance profile. We also study the dependence of irradiated magnetoresistance with power and temperature. Calculated results are in good agreement with experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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