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SLAVE-PARTICLE STUDIES OF THE ELECTRON-MOMENTUM DISTRIBUTION IN THE LOW-DIMENSIONAL T-J MODEL
FENG, SP; WU, JB; SU, ZB; YU, L; FENG, SP , INT CTR THEORET PHYS, POB 586, I-34100 TRIESTE, ITALY.
1993
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号47期号:22页码:15192-15200
摘要The electron-momentum distribution function in the t-J model is studied in the framework of the slave-particle approach. Within the decoupling scheme used in gauge-field and related theories, we treat formally phase and amplitude fluctuations as well as constraints without further approximations. Our result indicates that the electron Fermi surface observed in high-resolution angle-resolved photoemission and inverse-photoemission experiments cannot be explained within this framework, and the sum rule for the physical electron is not obeyed. A correct scaling behavior of the electron-momentum distribution function near k approximately k(F) and k approximately 3k(F) in one dimension can be reproduced by considering the nonlocal string fields [Z. Y. Weng et al., Phys. Rev. B 45, 7850 (1992)], but the overall momentum distribution is still not correct, at least at the mean-field level.
部门归属CHINESE ACAD SCI, INST THEORET PHYS, BEIJING 100080, PEOPLES R CHINA
关键词Valence-bond State Angle-resolved Photoemission Antiferromagnetic Heisenberg-model Mean-field-theory u Hubbard-model Luttinger-liquid Anderson Model Correlation Exponents Quantum Fluids Square Lattice
学科领域Physics
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收录类别SCI
WOS记录号WOS:A1993LF53100052
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被引频次:35[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12035
专题理论物理所1978-2010年知识产出
通讯作者FENG, SP , INT CTR THEORET PHYS, POB 586, I-34100 TRIESTE, ITALY.
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FENG, SP,WU, JB,SU, ZB,et al. SLAVE-PARTICLE STUDIES OF THE ELECTRON-MOMENTUM DISTRIBUTION IN THE LOW-DIMENSIONAL T-J MODEL[J]. PHYSICAL REVIEW B,1993,47(22):15192-15200.
APA FENG, SP,WU, JB,SU, ZB,YU, L,&FENG, SP , INT CTR THEORET PHYS, POB 586, I-34100 TRIESTE, ITALY..(1993).SLAVE-PARTICLE STUDIES OF THE ELECTRON-MOMENTUM DISTRIBUTION IN THE LOW-DIMENSIONAL T-J MODEL.PHYSICAL REVIEW B,47(22),15192-15200.
MLA FENG, SP,et al."SLAVE-PARTICLE STUDIES OF THE ELECTRON-MOMENTUM DISTRIBUTION IN THE LOW-DIMENSIONAL T-J MODEL".PHYSICAL REVIEW B 47.22(1993):15192-15200.
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