【摘 要】
：
报道不同层厚的AlAs/AlxGa1-xAs及GaAs/AlxGa1-xAs短周期超晶格的纵光学声子模的室温喇曼散射测量结果.在非共振条件下,观察到AlAs/AlxGa1-xAs中限制在AlxGa1-xAs混晶层中的
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报道不同层厚的AlAs/AlxGa1-xAs及GaAs/AlxGa1-xAs短周期超晶格的纵光学声子模的室温喇曼散射测量结果.在非共振条件下,观察到AlAs/AlxGa1-xAs中限制在AlxGa1-xAs混晶层中的类GaAs LO限制模和限制在AlAs层中的AlAs LO限制模,还观察到GaAs/AlxGa1-xAs中限制在AlxGa1-xAs混晶层中的类AlAs LO限制模和限制在GaAs层中的GaAs LO限制模.在近共振条件下,还观察到了AlAs/AlxGa1-xAs中AlAs的界面模.根据线性链模型,把测量的LO限制模的频率按照展开,给出了AlxGa1-xAs混晶的类AlAs支和类GaAs支光学声子色散曲线.
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