Superconductivity is a remarkably widespread phenomenon that is observed in most metals
cooled to very low temperatures. The ubiquity of such conventional superconductors, and …

Superconductivity develops in metals upon the formation of a coherent macroscopic
quantum state of electron pairs. Iron pnictides and chalcogenides are materials that have …

Whether a quantum critical point (QCP) lies beneath the superconducting dome has been a
long-standing issue that remains unresolved in many classes of unconventional …

We show that electron-and hole-doped BaFe 2 As 2 are strongly influenced by a Mott
insulator that would be realized for half-filled conduction bands. Experiments show that …

The iron-based superconductors that contain FeAs layers as the fundamental building block
in the crystal structures have been rationalized in the past using ideas based on the Fermi …

We study a multiorbital model for the alkaline iron selenides K 1-x Fe 2-y Se 2 using a slave-
spin method. With or without ordered vacancies, we identify a metal-to-Mott-insulator …

Elucidating the nature of the magnetic ground state of iron-based superconductors is of
paramount importance in unveiling the mechanism behind their high-temperature …

Hund metals are multi-orbital systems with moderate Coulomb interaction, U, among
charges and sizeable Hund's rule coupling, J (< U), that aligns the spins in different orbitals …

An important challenge in condensed matter physics is understanding iron-based
superconductors. Among these systems, the iron selenides hold the record for highest …

To clarify the nature of correlations in Hund metals and its relationship with Mott physics we
analyze the electronic correlations in multiorbital systems as a function of intraorbital …