PROPAGATION OF BAND ELECTRONS ON COUPLED CHAINS IN A MAGNETIC-FIELD

被引：3

作者：

YAN, WX ^{[1
]}

ZHAO, XG ^{[1
]}

机构：

[1] ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA

来源：

PHYSICS LETTERS A | 1995年 / 204卷 / 3-4期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/0375-9601(95)00458-F

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The problem of propagation of a tight-binding electron on coupled chains in a magnetic field is studied. The exact solution for the mean-square displacement is obtained, from which the coherent evolution of the band electron is found to be tuned periodically by the ratio of the flux passing through a unit cell to the flux quantum. The electron will escape to infinity rapidly when the ratio becomes an integer. When it approaches a half-integer, the electron motion will have a tendency towards localization. These theoretical findings are confirmed by numerical ones.

引用

页码：299 / 304

页数：6

共 23 条

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