期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 73, 期 12, 页码 3429-3434出版社
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.73.3429
关键词
TICuCl3; field-induced magnetic ordering; Bose-Einstein condensation of magnons; self-consistent Hartree-Hock; specific heat
We extend the self-consistent Hartree-Fock-Popov calculations by Nikuni et al. [Phys. Rev. Lett. 84 (2000) 58681 concerning the Bose-Eistein condensation of magnons in TlCuCl3 to include a realistic dispersion of the excitations. The result for the critical field as a function of temperature behaves as H-c(T) - H-c(0) similar to T-3/2 below 2 K but deviates from this simple power-law at higher temperature and is in very good agreement with the experimental results. The specific heat is computed as a function of temperature for different values of the magnetic field. It shows a lambda-like shape at the transition and is in good qualitative agreement with the results of Oosawa et al.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据