凝聚态物理
激子
量子阱
光电流
霍尔效应
价(化学)
量子霍尔效应
材料科学
谱线
光子能量
化学
光子
电阻率和电导率
光电子学
物理
磁场
光学
激光器
有机化学
量子力学
天文
作者
Jinling Yu,Y. H. Chen,CH Jiang,Y. Liu,Hui Ma,Laipan Zhu
摘要
The photocurrent spectra of inter-band photoinduced anomalous Hall effect (AHE) in insulating InGaAs/AlGaAs quantum wells have been observed at room temperature. The AHE current changes linearly with longitudinal electric fields. The anomalous Hall conductivity corresponding to excitonic state 1HH-1E (the first valence subband of heavy hole to the first conduction) has the same sign with that of excitonic state 1LH-1E, while the sign inverses when the photon energy is larger than the excitonic state 1LH-1E. The reason for this interesting phenomenon has been discussed. Due to the strong Rashba spin-orbit coupling in this perfect crystal, the photoinduced AHE is supposed to be intrinsic.
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