SPIN DYNAMICS ALONG THE CHAIN DIRECTION IN AN S=3/2, QUASI-ONE-DIMENSIONAL HEISENBERG-ANTIFERROMAGNET CSVCL3

被引：8

作者：

ITOH, S

KAKURAI, K

ARAI, M

ENDOH, Y

机构：

[1] RUTHERFORD APPLETON LAB,ISIS FACIL,DIDCOT OX11 0QX,OXON,ENGLAND

[2] UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 106,JAPAN

[3] TOHOKU UNIV,DEPT PHYS,SENDAI,MIYAGI 980,JAPAN

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1993年 / 5卷 / 36期

关键词：

D O I：

10.1088/0953-8984/5/36/032

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Inelastic neutron scattering experiments investigating the spin dynamics along the chain direction of an S = 3/2 quasi-one-dimensional Heisenberg antiferromagnet CsVCl3 were performed up to the zone boundary energy. We observed the quantum renormalization in the exchange constant and found that the scattering function cannot be described by either the classical delta-function or the quantum Heisenberg model for S = 1/2. The spin excitations have apparent linewidths and they are compared with the theory of the classical isotropic Heisenberg system at finite temperatures.

引用

页码：6767 / 6772

页数：6

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