Dynamics in pure and substituted volborthite kagome-like compounds

被引：8

作者：

Bert, F ^{[1
]}

Mendels, P

Bono, D

Olariu, A

Ladieu, F

Trombe, JC

Duc, F

Baines, C

Amato, A

Hillier, A

机构：

[1] Univ Paris 11, Phys Solides Lab, UMR 8502, F-91405 Orsay, France

[2] CEA Saclay, DSM, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France

[3] CNRS, UPR 8011, Ctr Elaborat Mat & Etud Struct, F-31055 Toulouse, France

[4] Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland

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

来源：

PHYSICA B-CONDENSED MATTER | 2006年 / 374卷

关键词：

muon-spin rotation; kagome lattice; frustrated magnets;

D O I：

10.1016/j.physb.2005.11.034

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Volborthite Cu3V2O7(OH)(2) center dot 2H(2)O is a natural frustrated antiferromagnet with a kagome-like magnetic lattice decorated by S = 1/2 spins. Our mu SR results confirm the existence of a dynamical plateau below 2K, as initially demonstrated in [Phys. Rev. Lett. 91 (2003) 207603] despite sensible quantitative differences in the relaxation rate values. Thanks to additional low temperature SQUID and NMR data we show that this plateau occurs concurrently with a freezing transition. Moreover, we revisited the effect of diluting the magnetic lattice for small dilution rates between 1% and 15%. Comparison is made with the well studied kagome bilayer compounds. The ground state of volborthite appears to be far less stable with respect to dilution. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：134 / 137

页数：4

共 13 条

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