TY - JOUR
T1 - Theoretical evidence for strong correlations and incoherent metallic state in FeSe
AU - Aichhorn, Markus
AU - Biermann, Silke
AU - Miyake, Takashi
AU - Georges, Antoine
AU - Imada, Masatoshi
PY - 2010/8/5
Y1 - 2010/8/5
N2 - The role of electronic Coulomb correlations in iron-based superconductors is an important open question. We provide theoretical evidence for strong correlation effects in FeSe, based on dynamical mean field calculations. Our ab initio spectral properties first demonstrate the existence of a lower Hubbard band. 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 due to formation of local moments. Predictions for angle-resolved photoemission spectroscopy are made.
AB - The role of electronic Coulomb correlations in iron-based superconductors is an important open question. We provide theoretical evidence for strong correlation effects in FeSe, based on dynamical mean field calculations. Our ab initio spectral properties first demonstrate the existence of a lower Hubbard band. 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 due to formation of local moments. Predictions for angle-resolved photoemission spectroscopy are made.
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U2 - 10.1103/PhysRevB.82.064504
DO - 10.1103/PhysRevB.82.064504
M3 - Article
AN - SCOPUS:77957553242
VL - 82
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 6
M1 - 064504
ER -