Fig. 4
From: Scaling and data collapse from local moments in frustrated disordered quantum spin systems

Data collapse in synthetic herbertsmithite ZnCu3(OH)6Cl2. Herbertsmithite heat capacity data from ref.17, here replotted using the scaling ansatz H0.5C/T (per formula unit of ZnCu3(OH)6Cl2) to show data collapse. The phonon contribution has not been subtracted, which accounts for the upturn for T/H ≳ 1. Away from the upturn at low T/H ≲ 0.05, which is due to the nuclear Schottky contribution, the data collapses with a peak consistent with the scaling function Eq. (2) and Fig. 1