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Xiang, T.; Luo, H. G.; Lu, D. H.; Shen, K. M.; Shen, Z. X.; Xiang, T , Chinese Acad Sci, Inst Phys, POB 603, Beijing 100190, Peoples R China
Intrinsic electron and hole bands in electron-doped cuprate superconductors
Source PublicationPHYSICAL REVIEW B
AbstractWe propose that the upper Hubbard band (electronlike) and the Zhang-Rice singlet band (holelike) are two essential components in describing low-energy excitations of electron-doped cuprate superconductors. We find that the gap between these two bands is significantly smaller than the charge-transfer gap measured by optics and is further reduced upon doping. This indicates that the charge fluctuation is strong and the system is in the intermediate correlation regime. A two-band model is derived. In the limit that the intraband and interband hopping integrals are equal to each other, this model is equivalent to the unconstrained t-J model with on-site Coulomb repulsions.
2009
ISSN1098-0121
Volume79Issue:1Pages:-
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNSFC; Office of Science, Division of Materials Science, DOE[DE-AC02-76SF00515] ; NSFC; Office of Science, Division of Materials Science, DOE[DE-AC02-76SF00515] ; NSFC; Office of Science, Division of Materials Science, DOE[DE-AC02-76SF00515] ; NSFC; Office of Science, Division of Materials Science, DOE[DE-AC02-76SF00515]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5406
Collection理论物理所科研产出_SCI论文
Corresponding AuthorXiang, T , Chinese Acad Sci, Inst Phys, POB 603, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Xiang, T.,Luo, H. G.,Lu, D. H.,et al. Intrinsic electron and hole bands in electron-doped cuprate superconductors[J]. PHYSICAL REVIEW B,2009,79(1):-.
APA Xiang, T.,Luo, H. G.,Lu, D. H.,Shen, K. M.,Shen, Z. X.,&Xiang, T , Chinese Acad Sci, Inst Phys, POB 603, Beijing 100190, Peoples R China.(2009).Intrinsic electron and hole bands in electron-doped cuprate superconductors.PHYSICAL REVIEW B,79(1),-.
MLA Xiang, T.,et al."Intrinsic electron and hole bands in electron-doped cuprate superconductors".PHYSICAL REVIEW B 79.1(2009):-.
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