Mixed symmetry superconductivity in two-dimensional Fermi liquids

Details Mixed symmetry superconductivity in two-dimensional Fermi liquids Mixed symmetry superconductivity in two-dimensional Fermi liquids

1995-07-20

arxiv.org/abs/cond-mat/9507085v1

Physics

Condensed Matter

3 figures attached in uuencoded gzipped files

Scientific paper

10.1103/PhysRevB.53.3598

We consider a 2D isotropic Fermi liquid with attraction in both $s$ and $d$ channels and examine the possibility of a superconducting state with mixed $s$ and $d$ symmetry of the gap function. We show that both in the weak coupling limit and at strong coupling, a mixed $s+id$ symmetry state is realized in a certain range of interaction. Phase transitions between the mixed and the pure symmetry states are second order. We also show that there is no stable mixed $s+d$ symmetry state at any coupling.

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