Spin-liquid ground state in the frustrated kagome antiferromagnet MgCu3(OH)6Cl2

被引：59

作者：

Kermarrec, E. ^{[1
]}

Mendels, P. ^{[1
]}

Bert, F. ^{[1
]}

Colman, R. H. ^{[2
]}

Wills, A. S. ^{[2
]}

Strobel, P. ^{[3
]}

Bonville, P. ^{[4
]}

Hillier, A. ^{[6
]}

Amato, A. ^{[5
]}

机构：

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

[2] UCL, Dept Chem, London WC1H 0AJ, England

[3] Univ Grenoble 1, CNRS, Inst Neel, F-38042 Grenoble, France

[4] CE Saclay, Serv Phys Etat Condense, CEA CNRS, F-91191 Gif Sur Yvette, France

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

[6] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 OQX, Oxon, England

来源：

PHYSICAL REVIEW B | 2011年 / 84卷 / 10期

关键词：

ZNCU3(OH)(6)CL-2; RELAXATION;

D O I：

10.1103/PhysRevB.84.100401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report muon spin resonance experiments on MgxCu4-x(OH)(6)Cl-2 with x similar to 1, a material isostructural to Herbertsmithite exhibiting regular kagome planes of S = 1/2 ions (Cu2+), and therefore a candidate for a spin-liquid ground state. We evidence the absence of any magnetic ordering down to 20 mK (similar to J/10(4)). We present a detailed investigation of the spin dynamics on well-characterized samples in zero and applied longitudinal fields, and a defect-based interpretation is proposed to explain the unconventional dynamics observed in the quantum spin-liquid phase.

引用

页数：5

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