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利用远红外反射光谱和拉曼散射光谱法测量了 Ga As/ Sr Ti O3外延单晶薄膜样品 ,研究了这种新型异质结构的晶格振动光学特性 .实验结果表明 :在钙钛矿型结构的 Sr Ti O3衬底上外延生长的 Ga As薄膜具有单晶结构 ,有与 Ga As单晶体材料相同的晶格振动特性
The GaAs / SrTiO3 epitaxial single crystal thin film samples were measured by far-infrared reflectance spectroscopy and Raman scattering spectroscopy, and the lattice vibrational optical properties of the novel heterostructures were studied. The experimental results show that in the perovskite structure GaAs thin film epitaxially grown on a SrTiO3 substrate has a single crystal structure with the same lattice vibration characteristics as the GaAs single crystal material