摘要
Electron structure of three series of alloy heterojunctions(GaAs)_(x)(Ge_(2))_(1-x)/Ge,(AlAs)_(x)(Ge2)_(1-x)/Ge and Al_(x)G_(1-x)As/Ge are calculated by linear muffin-tin orbital method with atomic-sphere approximation using the average-bond-energy theory in conjunction with a cluster expansion method.The results indicate the variations ofΔE_(v)(x)at heterojunctions(GeAs)_(x)(Ge2)_(1-x)/Ge and(AlAs)_(x)(Ge2)_(1-x)/Ge are nonlinear,which are very different from that of Al_(x)Ga_(1-x)As/Ge.
作者
郑金成
王仁智
郑永梅
蔡淑惠
ZHENG Jin-cheng;WANG Ren-zhi;ZHENG Yong-mei;CAI Shu-hui(Department of Physics,Xiamen University,Xiamen 361005)
基金
Supported by the National Natural Science Foundation of China under Grant No.19574041
the Natural Science Foundation of Fujian Province(F96005),the Special Doctoral Research Foundation of the Chinese State Commission of Education,and the Industrial Department of Xiamen Photo-Electron Company,。
