where A 0 , s, and t are fitted constants. B is the bulk modulus obtained from the Birch-Murnaghan equation DOS is the density-of-state (DOS) e↵ective mass, extracted within a 100 meV energy window from the band edge, and N b is the band degeneracy. The band here refers to the conduction band for electrons and valence band for holes. Parabolic bands and isotropic transport are assumed. Note that the estimated ⇣ represents the intrinsic phonon-limited upper limit of carrier mobility, and consequently the estimated e is also treated as the upper limit of electronic conductivity.