Physics – Condensed Matter
Scientific paper
1995-06-09
Physics
Condensed Matter
4 pages, 5 figures, uuencoded compressed postscript file
Scientific paper
10.1103/PhysRevB.52.R3856
Superconducting states with "extended s-wave" symmetry have been suggested in connection with recent ARPES experiments on BSCCO. In the presence of impurities, thermodynamic properties of such states reflect a residual density of states $N(0)$ for a range of concentrations. While properties reflecting $N(\omega)$ alone will be similar to those of d-wave states, transport measurements may be shown to qualitatively distinguish between the two. In contrast to the d-wave case with unitarity limit scattering, limiting low-temperature residual conductivities in the s-wave state are large and scale inversely with impurity concentration.
Borkowski L. S.
Hirschfeld Peter J.
Putikka W. O.
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