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题名: Magnon dispersion and thermodynamics in CsNiF3
作者: Karadamoglou, J ;  Papanicolaou, N ;  Wang, X ;  Zotos, X
刊名: PHYSICAL REVIEW B
出版日期: 2001
卷号: 63, 期号:22, 页码:-
关键词: MATRIX RENORMALIZATION-GROUP ;  HEISENBERG CHAIN ;  MAGNETIC-FIELD ;  QUANTUM ;  FERROMAGNETS ;  TEMPERATURE ;  ANISOTROPY ;  HEAT
学科分类: Physics
通讯作者: Wang, X , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
部门归属: Univ Crete, Dept Phys, Heraklion, Greece; Res Ctr Crete, Heraklion, Greece; PHB Ecublens, IRRMA, CH-1015 Lausanne, Switzerland
英文摘要: We present an accurate transfer matrix renormalization group calculation of the thermodynamics in a quantum spin-1 planar ferromagnetic chain. We also calculate the field dependence of the magnon gap and confirm the accuracy of the magnon dispersion derived earlier through a 1/n expansion. We are thus able to examine the validity of a number of previous calculations and further analyze a wide range of experiments on CsNiF3 concerning the magnon dispersion, magnetization, susceptibility, and specific hear. Although it is not possible to account for all data with a single set of parameters, the overall qualitative agreement is good and the remaining discrepancies may reflect a departure from ideal quasi-one-dimensional model behavior. Finally, we present some indirect evidence to the effect that the popular interpretation of the excess specific heat in terms of sine-Gordon solitons may not be appropriate.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12737
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:
Karadamoglou, J,Papanicolaou, N,Wang, X,et al. Magnon dispersion and thermodynamics in CsNiF3[J]. PHYSICAL REVIEW B,2001,63(22):-.
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