Fig. 4: Magnetic entropy as a function of temperature in K2Co(SeO3)2.
From: Wannier states and spin supersolid physics in the triangular antiferromagnet K2Co(SeO3)2

Temperature dependence of magnetic entropy in \({{\rm{K}}}_{2}{\rm{Co}}{({\rm{Se}}{{\rm{O}}}_{3})}_{2}\) in zero applied field, obtained by integrating the measured magnetic specific heat Cmag/T. The dashed lines indicate the Wannier entropy and the expected high-temperature value \({\ln}\,2\). The inset is a zoomed-in view to highlight the plateau at the Wannier entropy. The 10% discrepancy between the high-temperature data and the expected saturation value is attributed to imperfect phonon subtraction. This effect is expected to be much smaller at temperatures below 10 K.