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Effect of nematic ordering on electronic structure of FeSe

Fedorov, A.; Yaresko, A.; Kim, T. K.; Kushnirenko, Y.; Haubold, E.; Wolf, T.; Hoesch, M.; Grüneis, A.; Büchner, B.; Borisenko, S. V.

Abstract (englisch):
Electronically driven nematic order is often considered as an essential ingredient of high-temperature superconductivity. Its elusive nature in iron-based superconductors resulted in a controversy not only as regards its origin but also as to the degree of its influence on the electronic structure even in the simplest representative material FeSe. Here we utilized angle-resolved photoemission spectroscopy and density functional theory calculations to study the influence of the nematic order on the electronic structure of FeSe and determine its exact energy and momentum scales. Our results strongly suggest that the nematicity in FeSe is electronically driven, we resolve the recent controversy and provide the necessary quantitative experimental basis for a successful theory of superconductivity in iron-based materials which takes into account both, spin-orbit interaction and electronic nematicity.

Zugehörige Institution(en) am KIT Institut für Festkörperphysik (IFP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.1038/srep36834
ISSN: 2045-2322
URN: urn:nbn:de:swb:90-628332
KITopen ID: 1000062833
HGF-Programm 43.21.01; LK 01
Erschienen in Scientific reports
Band 6
Seiten 36834
Lizenz CC BY 4.0: Creative Commons Namensnennung 4.0 International
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