测量了GaAs/AlGaAs超晶格在T=77 K时的光电流谱,发现在波数v=1589 cm-1存在一个强电流峰.理论分析认为,该电流峰与超晶格界面的电子反射有关.据此算出的电流峰位置与实验观测结果一致.
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