Spin wave theory of a one-dimensional generalized Kitaev model

被引：11

作者：

Yang, Wang ^{[1
]}

Nocera, Alberto

Affleck, Ian

机构：

[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

来源：

PHYSICAL REVIEW B | 2020年 / 102卷 / 13期

基金：

加拿大自然科学与工程研究理事会;

关键词：

QUANTUM; MATRIX;

D O I：

10.1103/PhysRevB.102.134419

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, we perform a combination of classical and spin wave analysis on the one-dimensional spin-S Kitaev-Heisenberg-Gamma model in the region of an antiferromagnetic Kitaev coupling. Four phases are found, including a Neel ordered phase, a phase with O-h -> D-3 symmetry breaking, and "D-3-breaking I, II" phases which both break D-3 symmetries albeit in different ways, where O-h is the full octahedral group and D-3 is the dihedral group of order six. The lowest-lying spin wave mass is calculated perturbatively in the vicinity of the hidden SU(2) symmetric ferromagnetic point.

引用

页数：23

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