Theory of superconductivity in a Kondo lattice
Journal Article
·
· Chin. Phys.; (United States)
OSTI ID:5183187
S-wave and p-wave superconductivity in a Kondo lattice is studied theoretically in connection with heavy-fermion superconductivity (HFS). The hybridization between f-electron and conduction electron is investigated consistently and the corresponding quantities have been calculated in detail in the generalized Nambu formalism. It is shown that if one thinks f-electrons are responsible for superconductivity, for the s-wave paired state, the superconducting transition temperature is in agreement with that of Tachiki et al., but the specific heat jump is not;our result is more appropriate than theirs. For the p-wave paired state, the HFSs described by a Kondo lattice model are essentially almost localized Fermi superfluids, with a small modification. The effects of impurities on s- and p-wave paired states have been studied in detail and the conditions for the appearance of gapless superconductivity have been obtained for each case.
- Research Organization:
- Institute of Physics, Chinese Academy of Sciences, Beijing
- OSTI ID:
- 5183187
- Journal Information:
- Chin. Phys.; (United States), Journal Name: Chin. Phys.; (United States) Vol. 8:1; ISSN CHPHD
- Country of Publication:
- United States
- Language:
- English
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