Theory of field-insensitive heavy fermion in Sm compounds
Source abstract
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.
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Research context
OpenAlex topics: Rare-earth and actinide compounds · Physics of Superconductivity and Magnetism · Advanced Condensed Matter Physics
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Affiliations
Department of Physics, University of Ryukyus , Okinawa 903-0213, Japan
Funding
Japan Society for the Promotion of Science
References (19)
Show source-provided references
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