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Strongly correlated metal interfaces in the Gutzwiller approximation
Giovanni Borghi, Michele Fabrizio, Erio Tosatti
We study the effect of spatial inhomogeneity on the physics of a strongly correlated electron system exhibiting a metallic phase and a Mott insulating phase, represented by the sim…
Superconductivity in the doped bilayer Hubbard model
Nicola Lanata`, Paolo Barone, Michele Fabrizio
We study by the Gutzwiller approximation the melting of the valence bond crystal phase of a bilayer Hubbard model at sufficiently large inter-layer hopping. We find that a supercon…
Kondo Conductance in an Atomic Nanocontact from First Principles
Procolo Lucignano, Riccardo Mazzarello, Alexander Smogunov +2
The electrical conductance of atomic metal contacts represents a powerful tool to detect nanomagnetism. Conductance reflects magnetism through anomalies at zero bias -- generally w…
Ferromagnetic Kondo Effect at Nanocontacts
Paola Gentile, Lorenzo De Leo, Michele Fabrizio +1
Magnetic impurities bridging nanocontacts and break junctions of nearly magnetic metals may lead to permanent moments, analogous to the giant moments well known in the bulk case. A…
Surface dead layer for quasiparticles near a Mott transition
Giovanni Borghi, Michele Fabrizio, Erio Tosatti
Electron quasiparticles are progressively weakened by correlations upon approaching a continuos Mott metal insulator transition in a bulk solid. We show that corresponding to the b…