Theoretical investigation of the pressure dependences of positron annihilation in InAs and InSb

被引：3

作者：

Bouarissa, N

West, RN

Aourag, H

机构：

[1] UNIV SIDI BEL ABBES,COMPUTAT MAT SCI LAB,SIDI BEL ABBES 22000,ALGERIA

[2] UNIV SETIF,DEPT PHYS,SETIF 19000,ALGERIA

[3] UNIV TEXAS,DEPT PHYS,ARLINGTON,TX 76019

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1997年 / 47卷 / 01期

关键词：

positron annihilation; annihilation parameters; momentum distribution; indium arsenides;

D O I：

10.1016/S0254-0584(97)80023-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electron-positron momentum densities are calculated for the (001-110) plane in InAs and lush under normal and different pressures. The calculations are based on the independent particle approximation coupled with the pseudopotential method. The shapes of the profiles indicate that the angular correlation of positron annihilation radiation (ACPAR) along different crystallographic directions in InAs and InSb is highly sensitive to the pressure effect, It is shown that the choice of the experimental pressure derivative of energy gaps is the major parameter for the relevant momentum distribution.

引用

页码：23 / 30

页数：8

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