Evidences of Mott physics in iron pnictides from x-ray spectroscopy

S. Lafuerza; H. Gretarsson; F. Hardy; T. Wolf; C. Meingast; G. Giovannetti; M. Capone; A. S. Sefat; Y. -J. Kim; P. Glatzel; L. de' Medici

doi:10.1103/PhysRevB.96.045133

Evidences of Mott physics in iron pnictides from x-ray spectroscopy

Superconductivity 2017-07-26 v1 Strongly Correlated Electrons

Authors: S. Lafuerza , H. Gretarsson , F. Hardy , T. Wolf , C. Meingast , G. Giovannetti , M. Capone , A. S. Sefat , Y. -J. Kim , P. Glatzel , L. de' Medici

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Abstract

X-ray emission and absorption spectroscopies are jointly used as fast probes to determine the evolution as a function of doping of the fluctuating local magnetic moments in K- and Cr- hole-doped BaFe2As2. An increase in the local moment with hole-doping is found, supporting the theoretical scenario in which a Mott insulating state that would be realized for half-filled conduction bands has an influence throughout the phase diagram of these iron-pnictides.

Keywords

Mott physics iron pnictides x-ray spectroscopy local magnetic moments hole-doping

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@article{arxiv.1607.07417,
  title  = {Evidences of Mott physics in iron pnictides from x-ray spectroscopy},
  author = {S. Lafuerza and H. Gretarsson and F. Hardy and T. Wolf and C. Meingast and G. Giovannetti and M. Capone and A. S. Sefat and Y. -J. Kim and P. Glatzel and L. de' Medici},
  journal= {arXiv preprint arXiv:1607.07417},
  year   = {2017}
}

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10 pages, 3 figures and supplementary material

Evidences of Mott physics in iron pnictides from x-ray spectroscopy

Abstract

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