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题名: Transfer-matrix renormalization group study of spin ladders with cyclic four-spin interactions
作者: Lu, H. T. ;  Sun, L. Q. ;  Qin, Shaojin ;  Wang, Y. J.
刊名: PHYSICAL REVIEW B
出版日期: 2006
卷号: 74, 期号:22, 页码:-
关键词: ISOTROPIC HEISENBERG CHAIN ;  MAGNETIC EXCITATIONS ;  ARBITRARY SPINS ;  WIGNER CRYSTAL ;  EXCHANGE ;  MODEL ;  THERMODYNAMICS ;  LA6CA8CU24O41 ;  TEMPERATURE ;  SPECTRUM
学科分类: Physics
通讯作者: Lu, HT , Peking Univ, Sch Phys, Beijing 100871, Peoples R China
部门归属: Peking Univ, Sch Phys, Beijing 100871, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Interdisciplinary Ctr Theoret Studies, Beijing 100080, Peoples R China; Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China
英文摘要: The temperature dependence of the specific heat and spin susceptibility of spin ladders with cyclic four-spin interactions in the rung-singlet phase is explored by making use of the transfer-matrix renormalization group method. The values of the spin gap are extracted from the specific heat and susceptibility, respectively. It is found that for different relative strengths between interchain and intrachain interactions, the spin gap is approximately linear with the cyclic four-spin interaction in the region far away from the critical point. Furthermore, we show that the dispersion for the one-triplet magnon branch can be obtained by numerically fitting the partition function.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000243195600083
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5826
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:
Lu, H. T.,Sun, L. Q.,Qin, Shaojin,et al. Transfer-matrix renormalization group study of spin ladders with cyclic four-spin interactions[J]. PHYSICAL REVIEW B,2006,74(22):-.
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