Impurity Moments Conceal Low-Energy Relaxation of Quantum Spin Liquids

A. Pustogow, T. Le, H. -H. Wang +5

We scrutinize the magnetic properties of $\kappa$-(BEDT-TTF)${}_2$Hg(SCN)${}_2$Cl through its first-order metal-insulator transition at $T_{\mathrm{CO}}=30$ K by means of ${}^1$H nuclear magnetic…