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LOCALIZED EXCITATIONS IN COMPETING CHARGE-DENSITY-WAVE AND SPIN-DENSITY-WAVE SYSTEMS
WANG, WZ; WANG, CL; SU, ZB; YU, L; WANG, WZ , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
1993
发表期刊SYNTHETIC METALS
ISSN0379-6779
卷号56期号:40942页码:3370-3376
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.
部门归属CHINA CTR ADV SCI & TECHNOL,WORLD LAB,BEIJING 100080,PEOPLES R CHINA; INT CTR THEORET PHYS,I-34100 TRIESTE,ITALY
关键词Valence Metal-complexes Soliton Model
学科领域Physics
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收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12044
专题理论物理所1978-2010年知识产出
通讯作者WANG, WZ , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
推荐引用方式
GB/T 7714
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.
APA WANG, WZ,WANG, CL,SU, ZB,YU, L,&WANG, WZ , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA..(1993).LOCALIZED EXCITATIONS IN COMPETING CHARGE-DENSITY-WAVE AND SPIN-DENSITY-WAVE SYSTEMS.SYNTHETIC METALS,56(40942),3370-3376.
MLA WANG, WZ,et al."LOCALIZED EXCITATIONS IN COMPETING CHARGE-DENSITY-WAVE AND SPIN-DENSITY-WAVE SYSTEMS".SYNTHETIC METALS 56.40942(1993):3370-3376.
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