Specific Heat of the Spin-1/2 Antiferromagnetic Heisenberg Chain
YUN Guo-Hong, LIANG Xi-Xia
Department of Physics, Inner Mongolia University, Hohhot 010021
Specific Heat of the Spin-1/2 Antiferromagnetic Heisenberg Chain
YUN Guo-Hong;LIANG Xi-Xia
Department of Physics, Inner Mongolia University, Hohhot 010021
关键词 ：
75.10.Jm ,
75.40.+t ,
75.40.Fa
Abstract ： A simple analytic theory of thermodynamics at finite temperature for the spin-1/2 antiferromagnetic Heisenberg chain is proposed based on the picture of the particle-hole pair excitations. The dispersion relation of the particle-hole pairs is derived in the formulation of thermodynamic Bethe ansatz providing that the particles and holes have the same energy and they are excited as normal modes. It is shown that the behaviour of the specific heat is in excellent agreement with the numerical and experimental results.
Key words ：
75.10.Jm
75.40.+t
75.40.Fa
出版日期: 2001-09-01
引用本文:
YUN Guo-Hong;LIANG Xi-Xia. Specific Heat of the Spin-1/2 Antiferromagnetic Heisenberg Chain[J]. 中国物理快报, 2001, 18(9): 1261-1263.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2001/V18/I9/1261
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