SU(4) theory for spin systems with orbital degeneracy

被引：251

作者：

Li, YQ ^{[1
]}

Ma, M

Shi, DN

Zhang, FC

机构：

[1] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

[2] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China

[3] Nanjing Univ Aeronaut & Astronaut, Coll Sci, Nanjing 210016, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.81.3527

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The isotropic limit of spin systems with orbital degeneracy has global SU(4) symmetry. On many 2D lattices, the ground state does not possess long-range order, which may explain the observed spin liquid properties of LiNiO2. In the SU(4) Neel-ordered state, spin-spin correlations can be antiferromagnetic between two neighboring sites with parallel magnetic moments.

引用

页码：3527 / 3530

页数：4

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[2]

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