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LOCALIZED EXCITATIONS IN COMPETING BOND-ORDER-WAVE, CHARGE-DENSITY-WAVE AND SPIN-DENSITY-WAVE SYSTEMS
WANG, CL; WANG, WZ; GU, GL; SU, ZB; YU, L; WANG, CL , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING 100080,PEOPLES R CHINA.
1994
发表期刊MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS
ISSN1058-725X
卷号256期号:*页码:903-908
摘要The localized excitations in the competing bond-order-wave(BOW), charge-density-wave(CDW), and spin-density-wave(SDW) systems are investigated within the Bogoliubov-de Gennes formalism using an extended Peierls-Hubbard model. An extensive study of localized excitations over a wide range of the on-site e-ph coupling lambda(2) and the Hubbard interaction U leads to the following observations: (a) As lambda(2) increases at fixed U, the number of bound states inside the gap changes from two to four for the STE case and from two to three for the polaron case. (b) A non-monotonic dependence of the lattice relaxation energy on lambda(2) is predicted within the lattice relaxation approach developed by two of us earlier, and is attributed to a crossover from the weak-coupling to strong-coupling behavior showing up as the emergence of new bound states inside the gap. Moreover, the non-radiative transition rate of STE is also calculated and is used to tentatively interpret the very short life-time of STE in PtCl complexes.
部门归属ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA; INT CTR THEORET PHYS,I-34100 TRIESTE,ITALY
关键词Metal-complexes Model Relaxation
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/311006/11969
专题理论物理所SCI论文
通讯作者WANG, CL , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING 100080,PEOPLES R CHINA.
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WANG, CL,WANG, WZ,GU, GL,et al. LOCALIZED EXCITATIONS IN COMPETING BOND-ORDER-WAVE, CHARGE-DENSITY-WAVE AND SPIN-DENSITY-WAVE SYSTEMS[J]. MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS,1994,256(*):903-908.
APA WANG, CL,WANG, WZ,GU, GL,SU, ZB,YU, L,&WANG, CL , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING 100080,PEOPLES R CHINA..(1994).LOCALIZED EXCITATIONS IN COMPETING BOND-ORDER-WAVE, CHARGE-DENSITY-WAVE AND SPIN-DENSITY-WAVE SYSTEMS.MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS,256(*),903-908.
MLA WANG, CL,et al."LOCALIZED EXCITATIONS IN COMPETING BOND-ORDER-WAVE, CHARGE-DENSITY-WAVE AND SPIN-DENSITY-WAVE SYSTEMS".MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS 256.*(1994):903-908.
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