Strong electronic correlations are often associated with the proximity of a Mott-insulating
state. In recent years however, it has become increasingly clear that the Hund's rule …

A review of the basic ideas and techniques of the spectral density-functional theory is
presented. This method is currently used for electronic structure calculations of strongly …

The calculation of the electronic properties of materials is an important task of solid-state
theory, albeit particularly difficult if electronic correlations are strong, eg, in transition metals …

We outline a general mechanism for orbital-selective Mott transition, the coexistence of both
itinerant and localized conduction electrons, and show how it can take place in a wide range …

It is shown how, in multiband materials, the Hund's coupling plays a crucial role in tuning the
degree of electronic correlation. While in half-filled systems it enhances the correlations, in …

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

We analyze two different fermionic systems that defy Mott localization showing a metallic
ground state at integer filling and very large Coulomb repulsion. The first is a multiorbital …

We present and implement a self-consistent D Γ A approach for multiorbital models and ab
initio materials calculations. It is applied to the one-band Hubbard model at various …

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

We present a self-consistent numerical approach to solve the Gutzwiller variational problem
for general multiband models with arbitrary on-site interaction. The proposed method …