HALDANE PHASE AND LARGE-D PHASE OF THE SPIN-1/2 FERROMAGNETIC-ANTIFERROMAGNETIC ALTERNATING HEISENBERG CHAIN WITH ON-SITE ANISOTROPY

被引：10

作者：

OKAMOTO, K

NISHINO, D

SAIKA, Y

机构：

[1] Department of Physics, Tokyo Institute of Technology, Oh-Okayama, Meguro-ku

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1993年 / 62卷 / 08期

关键词：

D O I：

10.1143/JPSJ.62.2587

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We analytically study the boundary between the Haldane phase and the large-D (LD) phase of a ferromagnetic-antiferromagnetic alternating Heisenberg chain with on-site easy-plane anisotropy. We transform this model into a generalized alternating antiferromagnetic Heisenberg model with anisotropy. In the transformed model, the competition between the transverse and longitudinal alternations results in the Haldane-LD transition. Our Haldane-LD boundary calculated through the bosonization method agrees very well with that of Hida [Phys. Rev. B 46 (1992) 8268], determined by the numerical method.

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页码：2587 / 2590

页数：4

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