Spin Anisotropy in ZnCu_3(OH)_6Cl_2
Chyh-Hong Chern, Mitsuaki Tsukamoto
TL;DR
This paper investigates the role of spin anisotropic exchange interactions in ZnCu$_3$(OH)$_6$Cl$_2$, linking them to unusual magnetic susceptibility behavior and quantum spin flipping effects observed at very low temperatures.
Contribution
It highlights the significance of spin anisotropy in explaining magnetic properties and quantum effects in ZnCu$_3$(OH)$_6$Cl$_2$, a candidate quantum spin liquid.
Findings
Spin anisotropy contributes to magnetic susceptibility anomalies.
Muon spin resonance reveals quantum spin flipping below 300 mK.
Magnetic saturation indicates quantum effects in low-temperature regime.
Abstract
The spin anisotropic exchange interaction is suggested to contribute significantly to the abnormal upturn of the magnetic susceptibility in the ZnCu(OH)Cl. The saturation of the magnetic susceptibility below 300 mK observed in the muon spin resonance (SR) experiment is the quantum effect of the spin flipping process.
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