Origin of the intermediate-temperature magnetic specific heat capacity in the spin-liquid candidate CaCrO
arXiv:2309.13987 · doi:10.1103/PhysRevB.109.165138
Abstract
We present several approximate calculations of the specific heat capacity of the model for CaCrO proposed by Balz et al. [Phys. Rev. B 95, 174414 (2017)], using methods including exact diagonalization, Thermal Pure Quantum States, and high-temperature expansions. In none of these cases are we able to reproduce the magnitude of the zero-field specific heat capacity shown in the intermediate-temperature experimental data. We discuss possible reasons for the discrepancy, and what it might tell us about the magnetic Hamiltonian for CaCrO.
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