Ground-state properties and one-particle spectra for a spin-1 Heisenberg antiferromagnet from series expansions

被引：28

作者：

Oitmaa, J. ^{[1
]}

Hamer, C. J. ^{[1
]}

机构：

[1] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.77.224435

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We calculate ground state properties (energy, magnetization, susceptibility) and one-particle spectra for the S=1 Heisenberg antiferromagnet with easy-axis or easy-plane single-site anisotropy on the square lattice. Series expansions are used, in each of three phases of the system, to obtain systematic and accurate results. The location of the quantum phase transition in the easy-plane sector is determined. The results are compared to spin-wave theory.

引用

页数：10

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