Fig. 1: Classical ground state magnetic structures.
From: Wannier states and spin supersolid physics in the triangular antiferromagnet K2Co(SeO3)2
a Classical Y-phase. The order breaks the U(1) symmetry of the Hamiltonian selecting one orientation on the xy-plane and the C3 lattice geometry selecting one sublattice for the spin down. b The classical ground state exhibits accidental continuous degeneracy due to the freedom to select one of the three spin angles, with the other two constrained by the derived relation Eq. (2).
