LOCALIZED EXCITATIONS IN COMPETING CHARGE-DENSITY-WAVE AND SPIN-DENSITY-WAVE SYSTEMS

doi:10.1016/0379-6779(93)90130-O

	LOCALIZED EXCITATIONS IN COMPETING CHARGE-DENSITY-WAVE AND SPIN-DENSITY-WAVE SYSTEMS
	WANG, WZ ; WANG, CL ; SU, ZB ; YU, L
	1993
会议日期	AUG 12-18, 1992
会议地点	GOTEBORG, SWEDEN
关键词	VALENCE METAL-COMPLEXES SOLITON MODEL
卷号	56
期号	2-3
DOI	10.1016/0379-6779(93)90130-O
页码	3370-3376
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.
会议录	SYNTHETIC METALS
会议录出版者	ELSEVIER SCIENCE SA LAUSANNE
会议录出版地	LAUSANNE 1
语种	英语
URL标识	查看原文
ISSN号	0379-6779
WOS研究方向	Materials Science ; Physics ; Polymer Science
内容类型	会议论文
源URL	[http://ir.itp.ac.cn/handle/311006/23809]
专题	SCI会议论文
作者单位	1.CHINA CTR ADV SCI & TECHNOL,WORLD LAB,BEIJING 100080,PEOPLES R CHINA 2.INT CTR THEORET PHYS,I-34100 TRIESTE,ITALY
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[C]. 见:. GOTEBORG, SWEDEN. AUG 12-18, 1992.