Weakly anisotropic frustrated zigzag spin chain

被引：47

作者：

Dmitriev, D. V. ^{[1
]}

Krivnov, V. Ya. ^{[1
]}

机构：

[1] RAS, Joint Inst Chem Phys, Moscow 119334, Russia

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.77.024401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The frustrated spin-1/2 model with weakly anisotropic ferromagnetic nearest-neighbor and antiferromagnetic next-nearest-neighbor exchanges is studied with use of variational mean-field approach, scaling estimates of the infrared divergencies in the perturbation theory and finite-size calculations. The ground-state phase diagram of this model contains three phases: the ferromagnetic phase, the commensurate spin-fluid phase, and the incommensurate phase. The nontrivial behavior of the boundaries between these phases and the character of the phase transitions in case of weak anisotropy are determined.

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页数：8

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