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arXiv · 1003.1286

Theoretical evidence for strong correlations and incoherent metallic state in FeSe

Markus Aichhorn·Silke Biermann·Takashi Miyake·Antoine Georges·Masatoshi Imada
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Abstract

The role of electronic Coulomb correlations in iron-based superconductors is an important open question. We provide theoretical evidence for strong correlation effects in the FeSe compound, based on dynamical mean field calculations. A lower Hubbard band is found in the spectral properties. Moreover, together with significant orbital-dependent mass enhancements, we find that the normal state is a bad metal over an extended temperature range, implying a non-Fermi liquid. Predictions for angle-resolved photoemission spectroscopy are made.

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Markus Aichhorn, Silke Biermann, Takashi Miyake, Antoine Georges, Masatoshi Imada. 2010-09-22. Theoretical evidence for strong correlations and incoherent metallic state in FeSe. https://doi.org/10.1103/physrevb.82.064504

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