Optical conductivity of two-dimensional lattice

被引：2
|
作者：
Xu, Lei [1 ]
Zhang, Jun [1 ]
机构：
[1] Xinjiang Univ, Sch Phys, Urumqi 830046, Peoples R China
来源：
MODERN PHYSICS LETTERS B | 2008年 / 22卷 / 06期
基金：
中国国家自然科学基金;
关键词：
optical conductivity; tight-binding model; staggered magnetic flux;
D O I：
10.1142/S0217984908014894
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We investigate the optical conductivity in the two-dimensional (2D) square and triangular tight-binding lattice-electron model with staggered magnetic flux (SMF). The SMF results in a two-sublattice system with two branches of energy bands in both cases, and even generates new flux-dependent optical properties. Results for the flux parameter dependence of the mean kinetic energy, the Drude weight and the optical conductivity are discussed in detail. A comparison between the two cases has been done.
引用
收藏
页码：435 / 445
页数：11
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