DOPING OF CHARGE-DENSITY WAVE IN BA1-XKXBIO3

被引:24
作者
YU, J [1 ]
CHEN, XY [1 ]
SU, WP [1 ]
机构
[1] UNIV HOUSTON,TEXAS CTR SUPERCONDUCTIV,HOUSTON,TX 77204
来源
PHYSICAL REVIEW B | 1990年 / 41卷 / 01期
关键词
D O I
10.1103/PhysRevB.41.344
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We study the formation of charge density waves (CDW) in Ba1-xKxBiO3 within a tight-binding model proposed by Prelovsek, Rice, and Zhang. Light doping leads to the formation of immobile bipolarons. The charge density wave amplitude diminishes gradually as doping concentration increases and disappears at about 35% doping. We have calculated the density of states and optical properties for various doping concentrations. We also present corresponding results in two dimensions that are applicable to a CDW system with the La2CuO4 geometry. © 1990 The American Physical Society.
引用
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页码:344 / 349
页数:6
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