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SCHWINGER-BOSON STUDIES OF THE T-J MODEL - A SELF-CONSISTENT SYSTEMATIC EXPANSION
LI, YM; SHENG, DN; SU, ZB; YU, L; LI, YM , INT CTR THEORET PHYS,POB 586,I-34100 TRIESTE,ITALY.
1992
发表期刊PHYSICAL REVIEW B
ISSN0163-1829
卷号45期号:10页码:5428-5437
摘要A self-consistent systematic expansion is developed for the t-J model in the Schwinger-boson approach. We treat the fermion part with use of a systematic loop expansion technique and study the effects of magnetic fluctuations on the normal-state properties. It is found that the hole motion is strongly renormalized and incoherent bands are produced by magnetic fluctuations. The conductivity and the electron density of states are calculated and shown to be anomalous. The antiferromagnetic nature of fluctuations is found to be essential for these unusual properties. The relevance of the obtained results to oxide superconductors is also discussed.
部门归属ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA; UNIV HOUSTON,TEXAS CTR SUPERCONDUCT,HOUSTON,TX 77204; UNIV WARWICK,DEPT PHYS,COVENTRY CV4 7AL,W MIDLANDS,ENGLAND
关键词Mean-field-theory Valence-bond State High-temperature Superconductors Antiferromagnetic Heisenberg-model Quantum Antiferromagnet Square-lattice Hubbard-model Spiral Phases Hole Motion Dynamics
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/311006/12182
专题理论物理所1978-2010年知识产出
通讯作者LI, YM , INT CTR THEORET PHYS,POB 586,I-34100 TRIESTE,ITALY.
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LI, YM,SHENG, DN,SU, ZB,et al. SCHWINGER-BOSON STUDIES OF THE T-J MODEL - A SELF-CONSISTENT SYSTEMATIC EXPANSION[J]. PHYSICAL REVIEW B,1992,45(10):5428-5437.
APA LI, YM,SHENG, DN,SU, ZB,YU, L,&LI, YM , INT CTR THEORET PHYS,POB 586,I-34100 TRIESTE,ITALY..(1992).SCHWINGER-BOSON STUDIES OF THE T-J MODEL - A SELF-CONSISTENT SYSTEMATIC EXPANSION.PHYSICAL REVIEW B,45(10),5428-5437.
MLA LI, YM,et al."SCHWINGER-BOSON STUDIES OF THE T-J MODEL - A SELF-CONSISTENT SYSTEMATIC EXPANSION".PHYSICAL REVIEW B 45.10(1992):5428-5437.
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