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SCHWINGER-BOSON STUDIES OF THE SINGLE HOLE MOTION IN A 2D QUANTUM ANTIFERROMAGNET
WU, CQ; SU, ZB; YU, L; WU, CQ , FUDAN UNIV,TD LEE PHYS LAB,SHANGHAI 200433,PEOPLES R CHINA.
1994
发表期刊INTERNATIONAL JOURNAL OF MODERN PHYSICS B
ISSN0217-9792
卷号8期号:27页码:3843-3858
摘要Within the Schwinger-boson approach for the t-J model, the single hole problem in a two-dimensional quantum antiferromagnet is studied by using the quantum Bogoliubovde Gennes formalism which treats the distortion of the spin background and quantum spin fluctuations on an equal footing. Several self-trapped localized hole states are found in the distorted spin-background as in the case of an anisotropic Heisenberg model. These localized hole states survive at finite temperatures when the antiferromagnetic order becomes short-ranged. The energy separation between the two lowest states is reduced by considering the spin-background distortion, but it remains finite.
部门归属FUDAN UNIV,DEPT PHYS,SHANGHAI 200433,PEOPLES R CHINA; CHINESE ACAD SCI,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA; INT CTR THEORET PHYS,I-34100 TRIESTE,ITALY
关键词Mean Field-theory T-j Model Spectral-function Hubbard-model Lattice Superconductivity
学科领域Physics
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收录类别SCI
WOS记录号WOS:A1994QE34300003
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/11826
专题理论物理所SCI论文
通讯作者WU, CQ , FUDAN UNIV,TD LEE PHYS LAB,SHANGHAI 200433,PEOPLES R CHINA.
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WU, CQ,SU, ZB,YU, L,et al. SCHWINGER-BOSON STUDIES OF THE SINGLE HOLE MOTION IN A 2D QUANTUM ANTIFERROMAGNET[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS B,1994,8(27):3843-3858.
APA WU, CQ,SU, ZB,YU, L,&WU, CQ , FUDAN UNIV,TD LEE PHYS LAB,SHANGHAI 200433,PEOPLES R CHINA..(1994).SCHWINGER-BOSON STUDIES OF THE SINGLE HOLE MOTION IN A 2D QUANTUM ANTIFERROMAGNET.INTERNATIONAL JOURNAL OF MODERN PHYSICS B,8(27),3843-3858.
MLA WU, CQ,et al."SCHWINGER-BOSON STUDIES OF THE SINGLE HOLE MOTION IN A 2D QUANTUM ANTIFERROMAGNET".INTERNATIONAL JOURNAL OF MODERN PHYSICS B 8.27(1994):3843-3858.
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