Proximate Spin Liquid Ground State Arising from Competing Stripy and 120${}^{\circ }$ Spin Correlations in the Triangular Quantum Antiferromagnet ErMgGaO${}_4$

S. H. -Y. Huang, S. Petit, Bo Yuan +13

ErMgGaO${}_4$ is a quantum antiferromagnet wherein the pseudospin-1/2 degrees of freedom of Er${}^{3+}$ decorate two-dimensional triangular planes separated by disordered non-magnetic…