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题名: LOCALIZED EXCITATIONS IN COMPETING CHARGE-DENSITY-WAVE AND SPIN-DENSITY-WAVE SYSTEMS
作者: WANG, WZ ;  WANG, CL ;  SU, ZB ;  YU, L
刊名: SYNTHETIC METALS
出版日期: 1993
卷号: 56, 期号:40942, 页码:3370-3376
关键词: VALENCE METAL-COMPLEXES ;  SOLITON ;  MODEL
学科分类: Physics
通讯作者: WANG, WZ , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
部门归属: CHINA CTR ADV SCI & TECHNOL,WORLD LAB,BEIJING 100080,PEOPLES R CHINA; INT CTR THEORET PHYS,I-34100 TRIESTE,ITALY
英文摘要: The Bogoliubov-de Gennes formalism is used to study the localized excitations within the extended Peierls-Hubbard model describing quasi-one-dimensional systems like MX-chains. The phase diagram is studied as a function of Coulomb interaction U and on-site electron-phonon coupling lambda2. There is no coexistence of homogeneous SDW and CDW states at the mean field level. However, the self-trapped excitons (STE) in the CDW dominating regime contain locally non-vanishing SDW distortions and vice versa. As lambda2 increases, the number of bound states changes from two to four for the exciton case and from two to three for the polaron case. Upon further increase, one type of STE with a certain pattern of SDW distortion and charge transfer is transforming into another type of STE with a different pattern.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12044
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
WANG, WZ,WANG, CL,SU, ZB,et al. LOCALIZED EXCITATIONS IN COMPETING CHARGE-DENSITY-WAVE AND SPIN-DENSITY-WAVE SYSTEMS[J]. SYNTHETIC METALS,1993,56(40942):3370-3376.
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