Journal
PHYSICAL REVIEW B
Volume 84, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.100401
Keywords
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Funding
- European Commission [RII3-CT-2003-505925, ANR-09-JCJC-0093-01]
- Agence Nationale de la Recherche (ANR) [ANR-09-JCJC-0093] Funding Source: Agence Nationale de la Recherche (ANR)
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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.
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