Abstract
The role of local (Hund’s-rule) exchange is discussed in stabilizing spin-triplet superconducting state in an orbitally degenerate and correlated fermion system. Both gapfull and gapless modes appear even for the isotropic pairing potential if only the bands are degenerate. The Bogolyubov-De Gennes equation has 4-component nature for a doubly degenerate band case.
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Spałek, J. (2001). Triplet Pairing Via Local Exchange in Correlated Systems. In: Bonča, J., Prelovšek, P., Ramšak, A., Sarkar, S. (eds) Open Problems in Strongly Correlated Electron Systems. NATO Science Series, vol 15. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0771-9_26
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DOI: https://doi.org/10.1007/978-94-010-0771-9_26
Publisher Name: Springer, Dordrecht
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