Lifting of nodes by disorder in extended-$s$ state superconductors: application to ferropnictides

Details Lifting of nodes by disorder in extended-$s$ state superconductors: application to ferropnictides Lifting of nodes by disorder in extended-$s$ state superconductors: application to ferropnictides

2009-01-17

arxiv.org/abs/0901.2653v1

Phys. Rev. B 79, 094512 (2009)

Physics

Condensed Matter

Superconductivity

9 pages

Scientific paper

10.1103/PhysRevB.79.094512

We show, using a simple model, how ordinary disorder can gap an extended-$s$ ($A_{1g}$) symmetry superconducting state with nodes. The concommitant crossover of thermodynamic properties, particularly the $T$-dependence of the superfluid density, from pure power law behavior to an activated one is exhibited. We discuss applications of this scenario to experiments on the ferropnictide superconductors.

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