Fig. 6: Temperature dependence of various physical properties of CuAg4BHT.

a Temperature variable EPR spectrum. b M(H)|T isotherm measurements performed at various temperatures. As argued by Johnston, M(H)|T = χ(T)H + Mi(H)|T, where χ(T) and Mi(H)|T are the intrinsic susceptibility of CuAg4BHT and the impurity contribution to M(H)|T, respectively. c Measured magnetic susceptibility M/H of CuAg4BHT (red solid line). The blue symbols show the intrinsic susceptibilities χ(T) of CuAg4BHT derived from magnetic isotherms. The upper inset shows M/H versus T plot below 20 K. d Cp/T-T2 plot of CuAg4BHT in the temperature range of 2–20 K. The dashed line represents a fit using the equation, Cp = γT + βT3. Source data are provided as a Source Data file.