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arXiv 2402.06453cond-mat.mes-hall
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磁子带间振荡的光学实现

Optical realization of magneto-intersubband oscillations

M. L. Savchenko, A. A. Bykov, A. Shuvaev, A. K. Bakarov, A. Pimenov, O. E. Raichev

AI总结:

本文在GaAs双子带量子阱中实现磁子带间振荡的光学观测,验证了结合直流振荡与MIRO的简化理论模型,并发现光电阻对圆偏振符号敏感。

摘要:

我们报道了磁子带间振荡的光学实现,该振荡已在占据两个子带的GaAs量子阱的亚太赫兹透射率中测量到。遵循其直流对应物,这些振荡在逆磁场中呈周期性,周期由子带间隙决定。它们的幅度和偏振依赖性精确遵循所提出的动态磁子带间振荡方程的简化版本,该方程自然地将直流磁子带间振荡与微波诱导电阻振荡(MIRO)相结合。同时测量的光电阻也显示出其对圆偏振符号的强烈敏感性,证明了所用理论建模的正确性。

英文摘要:

We report on the optical realization of the magneto-intersubband oscillations that have been measured in the sub-terahertz transmittance of a GaAs quantum well with two subbands occupied. Following their dc analogue, the oscillations are periodic in the inverse magnetic field with the period governed by the subband gap. Their magnitude and polarization dependence accurately follow the presented simplified version of the dynamic magneto-intersubband oscillations equation that naturally combines dc magneto-intersabband oscillations with microwave-induced resistance oscillations (MIRO). Simultaneously measured photoresistance also reveals its strong sensitivity to the sign of the circular polarization, proving the used theoretical modeling.

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