arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0711.4249cond-mat.mes-hallcond-mat.dis-nn
收藏

分数阶微波诱导电阻振荡

Fractional microwave-induced resistance oscillations

I. A. Dmitriev, A. D. Mirlin, D. G. Polyakov

摘要:

我们开发了一个系统的理论,微波诱导的振荡的2D电子气的磁阻在附近的分数谐波的回旋共振,在最近的实验中观察到的。我们表明,在分离良好的朗道能级的限制的效果是由多光子非弹性机制。在中等磁场下,两种单光子机制变得重要。其中之一是由于共振系列的多个单光子跃迁,而另一个起源于微波诱导的边带的无序加宽朗道能级的态密度。

英文摘要:

We develop a systematic theory of microwave-induced oscillations in magnetoresistivity of a 2D electron gas in the vicinity of fractional harmonics of the cyclotron resonance, observed in recent experiments. We show that in the limit of well-separated Landau levels the effect is dominated by the multiphoton inelastic mechanism. At moderate magnetic field, two single-photon mechanisms become important. One of them is due to resonant series of multiple single-photon transitions, while the other originates from microwave-induced sidebands in the density of states of disorder-broadened Landau levels.

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。

↑