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

页码：144405 / 1

页数：8

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