Theory of field-insensitive heavy fermion in Sm compounds
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 vi...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2018-10-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5042743 |
| Summary: | 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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| ISSN: | 2158-3226 |