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Transfer-matrix renormalization group study of spin ladders with cyclic four-spin interactions
Lu, H. T.; Sun, L. Q.; Qin, Shaojin; Wang, Y. J.; Lu, HT , Peking Univ, Sch Phys, Beijing 100871, Peoples R China
2006
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号74期号:22页码:-
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.
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
关键词Isotropic Heisenberg Chain Magnetic Excitations Arbitrary Spins Wigner Crystal Exchange Model Thermodynamics La6ca8cu24o41 Temperature Spectrum
学科领域Physics
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收录类别SCI
WOS记录号WOS:000243195600083
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5826
专题理论物理所1978-2010年知识产出
通讯作者Lu, HT , Peking Univ, Sch Phys, Beijing 100871, Peoples R China
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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):-.
APA Lu, H. T.,Sun, L. Q.,Qin, Shaojin,Wang, Y. J.,&Lu, HT , Peking Univ, Sch Phys, Beijing 100871, Peoples R China.(2006).Transfer-matrix renormalization group study of spin ladders with cyclic four-spin interactions.PHYSICAL REVIEW B,74(22),-.
MLA Lu, H. T.,et al."Transfer-matrix renormalization group study of spin ladders with cyclic four-spin interactions".PHYSICAL REVIEW B 74.22(2006):-.
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