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The origin of a field-insensitive heavy-fermion state observed in Sm compounds is studied by an effective two-orbital Anderson model for 4f states in Sm ions. It is shown that the… Click to show full abstract
The origin of a field-insensitive heavy-fermion state observed in Sm compounds is studied by an effective two-orbital Anderson model for 4f states in Sm ions. It is shown that the fermi-liquid state with an enhanced specific-heat coefficient and a vanishingly small Wilson ratio is realized in the vicinity of a quantum critical point and accounts well for the unconventional heavy-fermion phenomenon.The origin of a field-insensitive heavy-fermion state observed in Sm compounds is studied by an effective two-orbital Anderson model for 4f states in Sm ions. It is shown that the fermi-liquid state with an enhanced specific-heat coefficient and a vanishingly small Wilson ratio is realized in the vicinity of a quantum critical point and accounts well for the unconventional heavy-fermion phenomenon.
Journal Title: AIP Advances
Year Published: 2018
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