Quantum Kagome antiferromagnet ZnCu3(OH)6Cl2
Philippe Mendels, Fabrice Bert
TL;DR
This paper reviews experimental findings on the quantum kagome antiferromagnet ZnCu3(OH)6Cl2, highlighting its significance for understanding quantum fluctuations and novel magnetic ground states in frustrated systems.
Contribution
It provides a comprehensive classification of experimental results on Herbersmithite, a structurally perfect kagome antiferromagnet, and discusses unresolved issues in the field.
Findings
Experimental evidence supports quantum spin liquid behavior.
Herbersmithite closely matches theoretical models of kagome antiferromagnets.
Several open questions remain about the ground state properties.
Abstract
The frustration of antiferromagnetic interactions on the loosely connected kagome lattice associated to the enhancement of quantum fluctuations for S=1/2 spins was acknowledged long ago as a keypoint to stabilize novel ground states of magnetic matter. Only very recently, the model compound Herbersmithite, ZnCu3(OH)6Cl2, a structurally perfect kagome antiferromagnet, could be synthesized and enables a close comparison to theories. We review and classify various experimental results obtained over the past years and underline some of the pending issues.
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