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题名: Mean-field theory for the spin-ladder system
作者: Dai, X ;  Su, ZB
刊名: PHYSICAL REVIEW B
出版日期: 1998
卷号: 57, 期号:2, 页码:964-969
关键词: HEISENBERG-ANTIFERROMAGNET ;  EXCITATION SPECTRUM ;  MODEL ;  GAP ;  SUPERCONDUCTIVITY ;  SUSCEPTIBILITY ;  (VO)2P2O7 ;  CHAINS ;  STATE
学科分类: Physics
通讯作者: Dai, X , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
部门归属: Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: In the present paper, we propose a mean-held approach for spin ladders based upon the Jordan-Wigner transformation along an elaborately ordered path. We show on the mean-held level that ladders with even-numbered legs open an energy gap in their low-energy excitation with a magnitude close to the corresponding experimental values, whereas the low-energy excitation of the odd-numbered-leg ladders are gapless. It supports the validity of our approach. We then calculate the gap size and the excitation spectra of a two-leg-ladder system. Our result is in good agreement with both the experimental data and the numerical results. [S0163-1829(98)09901-9].
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000071487300047
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12388
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:
Dai, X,Su, ZB. Mean-field theory for the spin-ladder system[J]. PHYSICAL REVIEW B,1998,57(2):964-969.
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