EFFECTS OF ELECTRON CORRELATION ON THE BAND-GAP OF A CHAIN OF HALOGEN-BRIDGED TRANSITION-METAL COMPOUNDS

被引：4

作者：

YU, ZG

SUN, X

ZHU, JH

SHEN, XC

机构：

[1] FUDAN UNIV,TD LEE LAB,SHANGHAI 200433,PEOPLES R CHINA

[2] FUDAN UNIV,DEPT PHYS,SHANGHAI 200433,PEOPLES R CHINA

[3] ACAD SINICA,NATL LAB INFRARED PHYS,SHANGHAI 200083,PEOPLES R CHINA

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.50.18633

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of electron correlation on the band gap of the halogen-bridged transition-metal compounds (MX complexes) with charge-density waves is studied by using the projection technique. It is found that the band gap of an MX complex is reduced by the electron correlation. This effect in an MX complex is contrary to that in polyacetylene, where the band gap of the bond-order wave is enhanced by the electron correlation, and the origin for this contrast is discussed. © 1994 The American Physical Society.

引用

页码：18633 / 18636

页数：4

共 18 条

[11] MANY-POLARON THEORY FOR CDW, SDW AND SUPERCONDUCTING PHASES IN ONE-DIMENSIONAL N-SITES N-ELECTRONS SYSTEM - QUANTUM-CLASSIC CROSSOVER [J].