中国物理B ›› 2018, Vol. 27 ›› Issue (12): 127501-127501.doi: 10.1088/1674-1056/27/12/127501
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
Yu-Ge Chen(陈宇戈), Yin-Xiang Li(李殷翔), Li-Jun Tian(田立君), Bin Chen(陈斌)
Yu-Ge Chen(陈宇戈)1, Yin-Xiang Li(李殷翔)2, Li-Jun Tian(田立君)1, Bin Chen(陈斌)2
摘要:
We use the mean-field approximation of Dyson-Maleev representation to study an XXZ Heisenberg ferrimagnetic spin chain with single-ion anisotropy. By solving the self-consistent equations with different anisotropies, λ and D respectively, the energy spectrums, internal energy, static susceptibility and specific heat are calculated. Especially, the quantum phase transition of the magnetization plateau induced by single-ion anisotropy D is obtained in the model of the ferrimagnetic spin chain by using Dyson-Maleev mean-field theory.
中图分类号: (Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))