Dynamical central peak and spinon deconfinement in frustrated spin chains

被引：4
|
作者：
Kokalj, J. [1 ]
Prelovsek, P. [1 ,2 ]
机构：
[1] J Stefan Inst, SI-1000 Ljubljana, Slovenia
[2] Univ Ljubljana, Fac Math & Phys, SI-1000 Ljubljana, Slovenia
来源：
PHYSICAL REVIEW B | 2010年 / 82卷 / 06期
关键词：
TRANSITION;
D O I：
10.1103/PhysRevB.82.060406
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Studying the dynamical spin structure factor in frustrated spin chains with spontaneously dimerized ground state we show that besides the gapped spin-wave excitations there appears at finite temperatures also a sharp central peak. The latter can be attributed to deconfined spinons, accounted well within the variational approach. The central peak remains well pronounced within the local spin dynamics and may be relevant for experiments on materials with one-dimensional frustrated spin chains.
引用
收藏
页数：4
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