Spin-liquid behavior in a kagome antiferromagnet:: Deuteronium jarosite

被引：36

作者：

Fak, B. ^{[1
,2
]}

Coomer, F. C. ^{[3
]}

Harrison, A. ^{[3
]}

Visser, D. ^{[2
,4
]}

Zhitomirsky, M. E. ^{[1
]}

机构：

[1] CEA Grenoble, SPSMS, Dept Rech Fondamentale Mat Condensee, F-38054 Grenoble, France

[2] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

[3] Univ Edinburgh, Sch Chem & EaStChem, Edinburgh EH9 3JJ, Midlothian, Scotland

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

来源：

EPL | 2008年 / 81卷 / 01期

关键词：

D O I：

10.1209/0295-5075/81/17006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The spin dynamics of the frustrated quasi-two-dimensional spin-5/2 Heisenberg antiferromagnetic kagome compound deuteronium jarosite, (D3O) Fe-3(SO4)(2)(OD)(6), has been studied using inelastic neutron scattering. The dynamic magnetic susceptibility shows a clear spin-liquid behavior with strong dynamic short-range correlations with staggered chirality, as seen from the wave vector dependence at finite-energy transfers. The magnetic scattering at low temperatures is gapless and extends out to at least 20 meV. The dynamics shows a non-exponential relaxation behavior but no dynamical w/T scaling. The characteristic energy (inverse relaxation rate) increases linearly with temperature. Copyright (C) EPLA, 2008.

引用

页数：6

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