用拉曼散射谱与远红外反射谱研究Ga_xIn_(1-x)As_ySb_(1-y)四元混晶的长波光学声子  

INVESTIGATION OF LONG-WAVELENGTH OPTICAL- PHONONS IN Ga_xIn_(1-x)As_ySb_(1-y) QUATERNARY MIXED CRYSTAL BY RAMAN SCATTERING SPECTROSCOPIES AND FIR REFLECTION SPECTRA

作　　者：梁帮立 蒋春萍[3] 夏冠群[1] 范叔平[2] 褚君浩[3] 

机构地区：[1]中国科学院上海冶金研究所,国家固体元器件与系统实验室 [2]苏州大学物理系,江苏苏州215006 [3]中国科学院上海技术物理研究所红外物理国家重点实验室

出　　处：《红外与毫米波学报》2001年第4期315-317,共3页Journal of Infrared and Millimeter Waves

基　　金：国家 8 63高技术研究基金 (编号 863 -0 0 1-0 15 2 )资助项目~~

摘　　要：报道了 MBE外延生长的 Gax In1 - x Asy Sb1 - y四元混晶的拉曼散射谱与远红外反射谱 ,并从拉曼散射谱中观察到了 Gax In1 - x Asy Sb1 - y四元混晶的晶格振动四模行为 ;从实验中还观察到低于 180 cm- 1的若干散射峰 ,提出它们可能是与次近邻原子间相互作用的晶格振动模式有关 ;从拉曼散射谱和红外反射谱中观察到了与 Gax In1 - xAsy Sb1 -The long wavelength optical phonons in GaxIn1-xAsySb1-y MBE epitaxial layers were investigated by Raman scattering spectro-copies and FIR-reflection spectra. The four-mode behavior and modes below 180cm(-1) related with the interaction between the third-nearest atoms in Ga(x)In(1-x)AS(y)Sb(1-y) quaternary mixed crystals were observed from the Raman data, and the related phenomenon possibly arising from the multi-phonon absorption process was observed from the FIR and Raman data.

关 键 词：四元混晶 拉曼散射谱 红外反射谱 长波光学声子 红外探测器 材料 

分 类 号：TN215[电子电信—物理电子学]