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题名: SLAVE-PARTICLE STUDIES OF THE ELECTRON-MOMENTUM DISTRIBUTION IN THE LOW-DIMENSIONAL T-J MODEL
作者: FENG, SP ;  WU, JB ;  SU, ZB ;  YU, L
刊名: PHYSICAL REVIEW B
出版日期: 1993
卷号: 47, 期号:22, 页码:15192-15200
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
学科分类: Physics
通讯作者: FENG, SP , INT CTR THEORET PHYS, POB 586, I-34100 TRIESTE, ITALY.
部门归属: CHINESE ACAD SCI, INST THEORET PHYS, BEIJING 100080, PEOPLES R CHINA
英文摘要: 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:A1993LF53100052
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12035
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
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.
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