Fig. 3: Temperature dependence of specific heat in K2Co(SeO3)2.
From: Wannier states and spin supersolid physics in the triangular antiferromagnet K2Co(SeO3)2
a Heat capacity measured in K2Co(SeO3)2 (shaded circles) and in the non-magnetic counterpart K2Mg(SeO3)2 (solid squares) as a function of temperature. A 1.08 scale factor was applied to the latter, to match the heat capacities of the two materials in the range 50–100 K. b Temperature dependence of the magnetic contribution to specific heat in K2Co(SeO3)2. The phonon contribution was estimated based on the scaled K2Mg(SeO3)2 data. The two prominent peaks correspond to the two higher-temperature BKT transitions. Inset: expanded view of the low-temperature magnetic heat capacity. A weaker feature at lower temperature marks the third transition. Actual BKT transition temperatures are typically lower than the corresponding specific heat maximum74.
