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arXiv 1702.02556cond-mat.mes-hall
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高功率微波诱导电阻振荡的精细结构

Fine structure of high-power microwave-induced resistance oscillations

Q. Shi, M. A. Zudov, I. A. Dmitriev, K. W. Baldwin, L. N. Pfeiffer, K. W. West

摘要:

本文报道了在超净二维电子气中观察到的微波诱导电阻振荡的精细结构。这种精细结构表现为多个次级尖锐极值,位于初级极值旁边,在高辐射功率下出现。理论研究表明,这种精细结构源于多光子辅助散射的短程杂质。精细结构的独特性质使我们能够访问所有的实验参数,包括微波功率,并分离不同的贡献光阻。此外,我们表明,精细结构提供了一个方便的手段,定量评估的相关性的无序势在高品质的系统,允许分离的短期和长期的无序贡献的电子迁移率。

英文摘要:

We report on observation of a fine structure of microwave-induced resistance oscillations in an ultraclean two-dimensional electron gas. This fine structure is manifested by multiple secondary sharp extrema, residing beside the primary ones, which emerge at high radiation power. Theoretical considerations reveal that this fine structure originates from multiphoton-assisted scattering off short-range impurities. Unique properties of the fine structure allow us to access all experimental parameters, including microwave power, and to separate different contributions to photoresistance. Furthermore, we show that the fine structure offers a convenient means to quantitatively assess the correlation properties of the disorder potential in high-quality systems, allowing separation of short- and long-range disorder contributions to the electron mobility.

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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