QUANTUM SPIN-1 CHAINS WITH STRONG PLANAR ANISOTROPY

被引：36
作者：
PAPANICOLAOU, N
SPATHIS, P
机构：
[1] Dept. of Phys., Crete Univ., Iraklion
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 1990年 / 2卷 / 31期
关键词：
D O I：
10.1088/0953-8984/2/31/011
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Quantum spin-1 chains with strong planar anisotropy are studied using both semiclassical and strong-coupling methods. In addition to providing accurate analytical results for the dispersion and intensity of an exciton or antiexciton mode, the authors find that an exciton-antiexciton bound state is formed that could be observed through the two-point longitudinal dynamic correlation function which is calculated explicitly. These results are relevant for the analysis of neutron scattering experiments on CsFeCl3 and CsFeBr 3.
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页码：6575 / 6591
页数：17
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