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3.
Nat Commun ; 11(1): 503, 2020 Jan 21.
Artigo em Inglês | MEDLINE | ID: mdl-31964895

RESUMO

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

4.
Nat Commun ; 10(1): 2721, 2019 06 20.
Artigo em Inglês | MEDLINE | ID: mdl-31221960

RESUMO

Physical properties of multi-orbital materials depend not only on the strength of the effective interactions among the valence electrons but also on their type. Strong correlations are caused by either Mott physics that captures the Coulomb repulsion among charges, or Hund physics that aligns the spins in different orbitals. We identify four energy scales marking the onset and the completion of screening in orbital and spin channels. The differences in these scales, which are manifest in the temperature dependence of the local spectrum and of the charge, spin and orbital susceptibilities, provide clear signatures distinguishing Mott and Hund physics. We illustrate these concepts with realistic studies of two archetypal strongly correlated materials, and corroborate the generality of our conclusions with a model Hamiltonian study.

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