LEVINSON THEOREM IN A SEMICONDUCTOR QUANTUM-WELL

被引：6

作者：

MILANOVIC, V ^{[1
]}

IKONIC, Z ^{[1
]}

TJAPKIN, D ^{[1
]}

机构：

[1] HIGH TECH PTT SCH, YU-11000 BELGRADE, YUGOSLAVIA

来源：

PHYSICS LETTERS A | 1992年 / 170卷 / 02期

关键词：

D O I：

10.1016/0375-9601(92)90785-K

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The relation between the phase shift of zero energy continuous spectrum wavefunctions and the number of bound states in a symmetric semiconductor quantum well is discussed. In the case of nonuniform effective mass, Levinson's theorem is shown to be valid in its usual form. However, in the high-energy range the phase shift tends to infinity, oscillating about a straight line, very different from the case of constant effective mass, where it tends to zero. Numerical calculations are given for a rectangular quantum well.

引用

页码：127 / 129

页数：3

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