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The drag of photons by electric current in quantum wells
Journal of Physics: Condensed Matter ( IF 2.7 ) Pub Date : 2021-03-16 , DOI: 10.1088/1361-648x/abdff7
G V Budkin 1 , I S Makhov 2 , D A Firsov 2
Affiliation  

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.



中文翻译:

量子阱中电流对光子的拖曳

量子阱中的电流流动打破了空间反转对称性,导致辐射传输依赖于电流和光子波矢量的相对方向,这种现象可以称为光子的电流拖曳。考虑到去极化和交换相关效应,我们开发了一种关于量子阱中子带间跃迁的这种效应的微观理论。结果表明,光子电流阻力的影响源于电子在动量空间中的重新分布导致的子带间光学跃迁的不对称性。我们表明,直流电流的存在会导致子带间共振位置的偏移,并影响量子阱中的透射系数和吸光度。

更新日期:2021-03-16
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