Abstract
Superconductivity in the two-dimensional Kondo lattice model is derived by means of the dual-fermion approach. This framework takes full account of local correlations based on the dynamical mean-field theory and further includes influence of critical antiferromagnetic fluctuations. It is found that pairing with dx2 -y2 symmetry similar to the Hubbard model appears only in the weak-coupling regime. As the coupling is increased, we observe transition to p-wave spin-singlet superconductivity. The emergence of the unconventional p-wave pairing is ascribed to formation of large Fermi surface, which embodies itinerancy of f electrons.
Original language | English |
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Pages (from-to) | 326-331 |
Number of pages | 6 |
Journal | Physics Procedia |
Volume | 75 |
DOIs | |
Publication status | Published - 2015 |
Externally published | Yes |
Event | 20th International Conference on Magnetism, ICM 2015 - Barcelona, Spain Duration: Jul 5 2015 → Jul 10 2015 |
Keywords
- Kondo lattice
- dual-fermion approach
- dynamical mean-field theory
- odd-frequency pairing
ASJC Scopus subject areas
- Physics and Astronomy(all)