Weakly anisotropic frustrated zigzag spin chain

被引：45
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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