Pair Susceptibilities and Gap Equations in Non-Fermi Liquids
- 27 March 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 74 (13) , 2575-2578
- https://doi.org/10.1103/physrevlett.74.2575
Abstract
The pair susceptibility and superconducting gap equation are obtained when a branch-cut spectrum, with either spin-charge separation or an anomalous Fermi surface exponent is introduced for the normal state. For -nondiagonal pairing interactions, spin-charge separation leads to an enhancement of and compared to a Fermi liquid. For , a critical coupling is required for a solution. For spin-charge separation or , an arbitrarily small -diagonal contribution to the pairing interaction still leads to a solution, as in a Fermi liquid.
Keywords
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