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arXiv 2010.03705cond-mat.mes-hall
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量子阱中电流对光子的拖曳

The drag of photons by electric current in quantum wells

G. V. Budkin, I. S. Makhov, D. A. Firsov

摘要:

量子阱中电流的流动打破了量子阱的空间反演对称性,导致辐射传输依赖于电流和光子波矢的相对取向,这种现象称为光子的电流拖曳。我们已经发展了一个微观理论,考虑到退极化和交换相关效应的量子阱中的子带间跃迁的这种效果。结果表明,光子的电流拖曳效应源于电子在动量空间中的重新分布导致的子带间光跃迁的不对称性。我们发现,直流电流的存在导致子带间共振位置的移动,并影响量子阱中的透射系数和吸光度。

英文摘要:

The flow of electric current in quantum well breaks the space inversion symmetry, which leads to the dependence of the radiation transmission on the relative orientation of current and photon wave vector, this phenomenon can be named current drag of photons. We have developed a microscopic theory of such an effect for intersubband transitions in quantum wells taking into account both depolarization and exchange-correlation effects. It is shown that the effect of the current drag of photons originates from the asymmetry of intersubband optical transitions due to the redistribution of electrons in momentum space. We show that the presence of dc electric current leads to the shift of intersubband resonance position and affects both transmission coefficient and absorbance in quantum wells.

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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