A phase diagram around a heavy-fermion quantum critical point is constructed from literature specific-heat data, organized by a chemical-doping control parameter and the crystal electric field splitting.
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Magnetization and specific heat analyses determine CEF parameters and reveal that the paramagnetic ground state in HoCo2Zn20 is a quasi-sextet from electron-nuclear spin entanglement, switchable to a dectet with different CEF parameters.
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II. Exploring the role of the Crystal Electric Field in the vicinity of a Quantum Critical Point
A phase diagram around a heavy-fermion quantum critical point is constructed from literature specific-heat data, organized by a chemical-doping control parameter and the crystal electric field splitting.
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Paramagnetic electron-nuclear spin entanglement in HoCo2Zn20
Magnetization and specific heat analyses determine CEF parameters and reveal that the paramagnetic ground state in HoCo2Zn20 is a quasi-sextet from electron-nuclear spin entanglement, switchable to a dectet with different CEF parameters.