We report a new kagome quantum spin liquid candidate Cu₃ Zn（OH）₆ FBr, which does not experience any phase transition down to 50 mK, more than three orders lower than the antiferromagnetic Curie-Weiss temperature（²00 K）. A clear gap opening at low temperature is observed in the uniform spin susceptibility obtained from¹⁹F nuclear magnetic resonance measurements. We observe the characteristic magnetic field dependence of the gap as expected for fractiona... 

【文章來(lái)源】：Chinese Physics Letters. 2017,34(07)SCICSCD

【文章頁(yè)數(shù)】：10 頁(yè)

【文章目錄】：
1. Fitting of the Knight shift data
2. Knight shift and magnetic susceptibility as a function of temperature
3. No contribution from free spins evidenced by spectra with differentτ
4. AC susceptibility at different frequencies



本文編號(hào)：3533667