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Symmetry Reduction in the Quantum Kagome Antiferromagnet Herbertsmithite
A. Zorko, M. Herak, M. Gomilšek, J. Van Tol, M. Velázquez, , F. Bert, P. Mendels
Published in American Physical Society
2017
PMID: 28106444
Volume: 118
   
Issue: 1
Abstract
Employing complementary torque magnetometry and electron spin resonance on single crystals of herbertsmithite, the closest realization to date of a quantum kagome antiferromagnet featuring a spin-liquid ground state, we provide novel insight into different contributions to its magnetism. At low temperatures, two distinct types of defects with different magnetic couplings to the kagome spins are found. Surprisingly, their magnetic response contradicts the threefold symmetry of the ideal kagome lattice, suggesting the presence of a global structural distortion that may be related to the establishment of the spin-liquid ground state. © 2017 American Physical Society.
About the journal
JournalData powered by TypesetPhysical Review Letters
PublisherData powered by TypesetAmerican Physical Society
ISSN00319007