Phase diagram and symmetry breaking of an SU(4) spin-orbital chain in a generalized external field

被引：3
|
作者：
Gu, SJ [1 ]
Li, YQ
Zhou, HQ
机构：
[1] Zhejiang Univ, Zhejiang Inst Modern Phys, Hangzhou 310027, Peoples R China
[2] Univ Queensland, Sch Phys Sci, Ctr Math Phys, Brisbane, Qld 4072, Australia
来源：
PHYSICAL REVIEW B | 2004年 / 69卷 / 14期
关键词：
D O I：
10.1103/PhysRevB.69.144405
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The ground-state phases of a one-dimensional SU(4) spin-orbital Hamiltonian in a generalized external field are studied on the basis of the Bethe-ansatz solution. Introducing three Lande g factors for spin, orbital, and their products in the SU(4) Zeeman term, we systematically discuss various symmetry breakings. The magnetization versus external field is evaluated by solving the Bethe-ansatz equations numerically. The phase diagrams corresponding to distinct residual symmetries are given by means of both numerical and analytical methods.
引用
收藏
页码：144405 / 1
页数：8
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