Competition between superconductivity and nematic order : anisotropy of superconducting coherence length

Details Competition between superconductivity and nematic order : anisotropy of superconducting coherence length Competition between superconductivity and nematic order : anisotropy of superconducting coherence length

2011-12-16

arxiv.org/abs/1112.3973v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

We study the interplay between nematic order and superconductivity, motivated by a recent experiment on FeSe observing strongly distorted vortex shapes (Song et al., Science 332, 1410 (2011)). We show that the nematic order strongly enhances the anisotropy in the superconducting coherence length, beyond that expected from considerations of the Ginzburg-Landau theory. We obtain universal functions describing the coupling between the nematic order and superconductivity, and discuss connections of our results to the experiments.

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