Distinct nature of orbital-selective Mott phases dominated by low-energy local spin fluctuations
Distinct nature of orbital-selective Mott phases dominated by low-energy local spin fluctuations
Quantum orbital-selective Mott (OSM) transitions are investigated within dynamical mean-field theory based on a two-orbital Hubbard model with different bandwidth at half filling. We find two distinct OSM phases both showing coexistence of itinerant electrons and localized spins, dependent on whether the Hund's coupling is full or of Ising type. …