S-WAVE SUPERCONDUCTIVITY IN WEAK FERROMAGNETIC METALS

Citation
Kb. Blagoev et al., S-WAVE SUPERCONDUCTIVITY IN WEAK FERROMAGNETIC METALS, Philosophical magazine letters, 78(2), 1998, pp. 169-176
Citations number
29
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
09500839
Volume
78
Issue
2
Year of publication
1998
Pages
169 - 176
Database
ISI
SICI code
0950-0839(1998)78:2<169:SSIWFM>2.0.ZU;2-O
Abstract
We investigate the behaviour of weak ferromagnetic metals close to the ferromagnetic critical point. We show that in the limit of small magn etic moment the low temperature metallic phase is rigorously described by a local ferromagnetic Fermi liquid that has a momentum-independent self-energy. Whereas, non-Fermi liquid features develop at higher tem peratures. Furthermore, we find that an instability towards s-wave sup erconductivity is possible when the exchange splitting is comparable t o the superconducting gap.