Extended Data Fig. 2: Magnetic heat capacity, entropy, and dilution refrigerator heat capacity.
From: Two-dimensional heavy fermions in the van der Waals metal CeSiI
a, Heat capacity of multiple samples of CeSiI and LaSiI. Inset: C/T vs T2 fit for the LaSiI samples. b, Temperature dependence of the heat capacity of CeSiI and LaSiI. The magnetic heat capacity of CeSiI is estimated by subtracting CLaSiI from CCeSiI (Cmag = CCeSiI – CLaSiI). c, Temperature dependence of the magnetic heat capacity and a fitted Schottky anomaly corresponding to a low-lying crystal field level. d, Temperature dependence of the magnetic heat capacity at different magnetic fields with the Schottky contribution subtracted. e, Temperature dependence of the entropy calculated from the heat capacity data with the zero-field Schottky contribution subtracted. The entropy associated with the magnetic transition is close to the expected value Rln(2) for a doublet ground state. f, Low temperature dependence of C/T measured at different magnetic fields.
