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Origin of the intermediate-temperature magnetic specific heat capacity in the spin-liquid candidate Ca10Cr7O28

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Hooley,  Chris
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Citation

Crossley, J., & Hooley, C. (2024). Origin of the intermediate-temperature magnetic specific heat capacity in the spin-liquid candidate Ca10Cr7O28. Physical Review B, 109(16): 165138. doi:10.1103/PhysRevB.109.165138.


Cite as: https://hdl.handle.net/21.11116/0000-000F-9209-2
Abstract
We present several approximate calculations of the specific heat capacity of the model for Ca10Cr7O28 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 (-5-15 K) experimental data. We discuss possible reasons for the discrepancy, and what it might tell us about the magnetic Hamiltonian for Ca10Cr7O28.