四种材料超晶格的价带自旋劈裂的研究  

STUDY ON THE SPIN SPLITTING OF THE ENERGY BAND FOR SUPERLATTICES WITH QUART CONSTITUTENT MATERIALS

作　　者：田园 陈维友[1,2] 彭宇恒[1,2] 张宝林[1,2] 

机构地区：[1]中国科学院长春物理研究所 [2]吉林大学电子工程系

出　　处：《发光学报》1997年第1期90-93,共4页Chinese Journal of Luminescence

摘　　要：四种材料超晶格的价带自旋劈裂的研究田园ａ）陈维友ｂ）彭宇恒ｂ）张宝林ａ）ａ）（中国科学院长春物理研究所，长春１３００２１）ｂ）（吉林大学电子工程系，长春１３００２３）关键词能带结构，超晶格，自旋劈裂自从Ｅｓａｋｉ和Ｔａｕ［１］发现量子阱和超晶格以来，...The valence band spin splitting for a superlattice composed of AlAs, Al y Ga 1- y As, Al x Ga 1- x As and GaAs is studied in this paper. It is shown that when the superlattice unit cell is asymmetrcal about the centre of the unit cell, the band corresponding to spin up and spin down will spit. The spitting mainly takes place at the stronger interaction. The stronger is the interaction, the larger is the spin splitting. When y is increased for x being fixed 0.05, the spin splitting does not cause much variation. However, when x is increased for y being fixed 0 9, the spin splitting produces a large rise and fall.

关 键 词：能带结构 超晶格 自旋劈裂 半导体 

分 类 号：O471.5[理学—半导体物理]