Vector chiral order in frustrated spin chains

被引：52
|
作者：
McCulloch, I. P. [1 ]
Kube, R. [1 ]
Kurz, M. [1 ]
Kleine, A. [1 ]
Schollwoeck, U. [1 ]
Kolezhuk, A. K. [1 ]
机构：
[1] Rhein Westfal TH Aachen, Inst Theoret Phys C, D-52056 Aachen, Germany
来源：
PHYSICAL REVIEW B | 2008年 / 77卷 / 09期
关键词：
D O I：
10.1103/PhysRevB.77.094404
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
By means of a numerical analysis using a non-Abelian symmetry realization of the density matrix renormalization group, we study the behavior of vector chirality correlations in isotropic frustrated chains of spin S=1 and S=1/2, subject to a strong external magnetic field. It is shown that the field induces a phase with spontaneously broken chiral symmetry, in line with earlier theoretical predictions. We present results on the field dependence of the order parameter and the critical exponents.
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页数：7
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