Infrared phonons as a probe of a spin-liquid states in herbertsmithite ZnCu3(OH)6Cl2
Andrei B. Sushkov, Gregory S. Jenkins, Tian-Heng Han, Young S. Lee,, and H. Dennis Drew
TL;DR
This study investigates how infrared phonons can reveal the magnetic fluctuations in herbertsmithite, a candidate quantum spin liquid, by analyzing temperature-dependent reflectivity spectra and phonon broadening.
Contribution
It provides experimental evidence linking phonon behavior to magnetic fluctuations in herbertsmithite, advancing understanding of spin-liquid states.
Findings
Anomalous broadening of low-frequency phonons observed
Temperature dependence indicates magnetic fluctuation effects
Infrared phonons serve as probes of spin-liquid dynamics
Abstract
We report on temperature dependence of the infrared reflectivity spectra of a single crystalline herbertsmithite in two polarizations --- parallel and perpendicular to the kagome plane of Cu atoms. We observe anomalous broadening of the low frequency phonons possibly caused by fluctuations in the exotic dynamical magnetic order of the spin liquid.
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