COLLECTIVE INTERACTIONS IN A QUANTUM-WELL - THE INCLUSION OF NONLOCAL EXCHANGE

被引：32
|
作者：
RYAN, JC
机构：
[1] Naval Research Laboratory, Washington
来源：
PHYSICAL REVIEW B | 1991年 / 43卷 / 15期
关键词：
D O I：
10.1103/PhysRevB.43.12406
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a variational scheme for calculating the irreducible polarizability of an electron system and apply this method to the exchange interaction in a single quantum well. The collective spin-density and intersubband plasmon energies are derived and evaluated numerically in an infinite-square-well approximation. These results are compared with experiments as well as with the previous theoretical results based upon the local-density approximation.
引用
收藏
页码：12406 / 12412
页数：7
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