Ab-initio theory of Iron based superconductors

F. Essenberger; A. Sanna; P. Buczek; A. Ernst; L. Sandratskii; E. K. U. Gross

Ab-initio theory of Iron based superconductors

Superconductivity 2014-11-11 v1

Authors: F. Essenberger , A. Sanna , P. Buczek , A. Ernst , L. Sandratskii , E. K. U. Gross

Abstract

We report the first-principles study of superconducting critical temperature and superconducting properties of Fe-based superconductors taking into account on the same footing phonon, charge and spin-fluctuation mediated Cooper pairing. We show that in FeSe this leads to a modulated s $\pm$ gap symmetry, and that the antiferromagnetic paramagnons are the leading mechanism for superconductivity in FeSe, overcoming the strong repulsive effect of both phonons and charge pairing.

Keywords

iron-based superconductors ab-initio theory superconducting critical temperature Cooper pairing spin fluctuations FeSe s$\pm$ gap symmetry

Cite

@article{arxiv.1411.2121,
  title  = {Ab-initio theory of Iron based superconductors},
  author = {F. Essenberger and A. Sanna and P. Buczek and A. Ernst and L. Sandratskii and E. K. U. Gross},
  journal= {arXiv preprint arXiv:1411.2121},
  year   = {2014}
}

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