3D superconducting gap in FeSe from ARPES

Y. S. Kushnirenko; A. V. Fedorov; E. Haubold; S. Thirupathaiah; T. Wolf; S. Aswartham; I. Morozov; T. K. Kim; B. Büchner; S. V. Borisenko

doi:10.1103/PhysRevB.97.180501

3D superconducting gap in FeSe from ARPES

Superconductivity 2018-05-09 v1

Authors: Y. S. Kushnirenko , A. V. Fedorov , E. Haubold , S. Thirupathaiah , T. Wolf , S. Aswartham , I. Morozov , T. K. Kim , B. Büchner , S. V. Borisenko

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Abstract

We present a systematic angle-resolved photoemission spectroscopy study of the superconducting gap in FeSe. The gap function is determined in a full Brillouin zone including all Fermi surfaces and kz-dependence. We find significant anisotropy of the superconducting gap in all momentum directions. While the in-plane anisotropy can be explained by both, nematicity-induced pairing anisotropy and orbital-selective pairing, the kz-anisotropy requires additional refinement of theoretical approaches.

Keywords

angle-resolved photoemission spectroscopy

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@article{arxiv.1802.08668,
  title  = {3D superconducting gap in FeSe from ARPES},
  author = {Y. S. Kushnirenko and A. V. Fedorov and E. Haubold and S. Thirupathaiah and T. Wolf and S. Aswartham and I. Morozov and T. K. Kim and B. Büchner and S. V. Borisenko},
  journal= {arXiv preprint arXiv:1802.08668},
  year   = {2018}
}

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Main text: 6 pages, 4 figures; Supplemental Material: 2 pages, 1 figure

3D superconducting gap in FeSe from ARPES

Abstract

Keywords

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