We generalize the rotationally invariant formulation of the slave-boson formalism to
multiorbital models, with arbitrary interactions, crystal fields, and multiplet structure. This …

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 …

Spin-or orbital-selective behaviors in correlated electron materials offer rich promise for
spintronics or orbitronics phenomena and applications deriving from them. Strong local …

The bad-metal behavior of the iron pnictides has motivated a theoretical description in terms
of a proximity to Mott localization. Since the parent compounds of the iron pnictides contain …

The alkali-doped fullerides A 3 C 60 are half-filled three-orbital Hubbard systems which
exhibit an unconventional superconducting phase next to a Mott insulator. While the pairing …

Slave-spin mean-field theory, a light and accurate technique to model electronic correlations
in Fermi-liquid phases of multi-orbital materials, is pedagogically exposed in this chapter …

Tight binding models like the Hubbard Hamiltonian are most often explored in the context of
uniform intersite hopping t. The electron-electron interactions, if sufficiently large compared …

The interaction between itinerant and Mott localized electronic states in strongly correlated
materials is studied within dynamical mean field theory in combination with the numerical …

We examine the orbital-selective Mott transition in the non-hybridized two-band Hubbard
model using the dynamical mean-field theory. We find that the orbital-selective Mott …

We study the Mott transition in the three-orbital Hubbard model. To investigate how the
orbital level splitting and the Ising-type Hund's coupling affect the Mott transition in the case …