(CdSe)_l(ZnSe)_3/ZnSe短周期超晶格多量子阱的共振Ramam谱  

RESONANT RAMAN SCATTERING IN (CdSe)_1(ZnSe)_3/ZnSe SHORT-PERIOD SUPERLATTICE MULTIPLE QUANTUM WELLS

作　　者：侯永田[1] 何国山[1] 张树霖[1] 彭中灵[2] 李杰[2] 袁诗鑫[2] 

机构地区：[1]北京大学物理系,北京100871 [2]中国科学院上海技术物理研究所,上海200083

出　　处：《物理学报》1993年第10期1707-1711,共5页Acta Physica Sinica

摘　　要：在(CdSe)_1(ZnSe)_3/ZnSe短周期超晶格多量子阱中,根据一维线性链模型计算的结果与实验结果的比较表明,我们在不同的共振条件下分别观察到了来自多量子阱的阱中和垒中ZnSe限制纵光学声子模的Raman散射。与GaAs/AlAs量子阱的偏振选择定则不同,在共振条件下,我们在两种偏振配置下都观察到了阱中ZnSe限制模LO_1,并认为这种不同可能来源于样品特殊的电子子带结构和光学声子行为。In (CdSe)1(ZnSe)3/ZnSe short-period superlattice multiple quantum wells, we observed the Raman scattering from ZnSe confined longitudinal optical phonon modes in both the barriers and wells of quantum wells under different resonant conditions. From comparison between theoretical analysis with linear chain model and experimental results, the observed ZnSe confined longitudinal optical phonon mode in the both configuration are shown to be LO1 This differs from the observations in GaAs/AlAs quantum wells and we tentatively attribute the disagreement to the different subband structures in our sample.

关 键 词：超晶格半导体 共振 喇曼效应 

分 类 号：O471.4[理学—半导体物理]