Characterisation of spin-waves in copper(II) deuteroformate tetradeuterate:: a square S=1/2 Heisenberg antiferromagnet

被引：11

作者：

Clarke, SJ

Harrison, A

Mason, TE

Visser, D

机构：

[1] Univ Edinburgh, Dept Chem, Edinburgh EH9 3JJ, Midlothian, Scotland

[2] Univ Exeter, Sch Chem, Exeter EX4 4QD, Devon, England

[3] Riso Natl Lab, Dept Solid State Phys, DK-4000 Roskilde, Denmark

[4] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

来源：

SOLID STATE COMMUNICATIONS | 1999年 / 112卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

magnetically ordered materials; spin dynamics; neutron scattering;

D O I：

10.1016/S0038-1098(99)00400-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Copper(II) formate tetrahydrate (CFTH) is a model square S = 1/2 Heisenberg antiferromagnet with T-N = 16.54 +/- 0.05 K. The dispersion of spin-waves in the magnetic layers of a fully deuterated sample of this material has been mapped at 4.3 K by inelastic neutron scattering from the zone centre at 0.38 meV to the zone boundary at 14.8 meV, The data are described well by spin-wave theory with a small correction for quantum fluctuations, yielding a nearest-neighbour in-plane exchange constant of 6.3 +/- 0.2 meV, (C) 1999 Elsevier Science Ltd, All rights reserved.

引用

页码：561 / 564

页数：4

共 24 条

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