Ising-type quantum spin liquid state in PrMgAl$_{11}$O$_{19}$
Ising-type quantum spin liquid state in PrMgAl$_{11}$O$_{19}$
We have grown single crystals of PrMgAl$_{11}$O$_{19}$, an ideal triangular-lattice antiferromagnet, and performed magnetic susceptibility, specific heat and thermal conductivity measurements at low temperatures. The main results are as follows: (i) The temperature-dependent susceptibility shows a negligible in-plane response and the isothermal magnetization curves confirm the easy axis along the …