A dynamical mean-field study of orbital-selective Mott phase enhanced by next-nearest neighbor hopping
Sign Up to like & getrecommendations! Published in 2018 at "Physica B: Condensed Matter"
DOI: 10.1016/j.physb.2018.04.003
Abstract: Abstract The dynamical mean-field theory is employed to study the orbital-selective Mott transition (OSMT) of the two-orbital Hubbard model with nearest neighbor hopping and next-nearest neighbor (NNN) hopping. The NNN hopping breaks the particle-hole symmetry… read more here.
Keywords: dynamical mean; orbital selective; nearest neighbor; selective mott ... See more keywords
Block orbital-selective Mott insulators: A spin excitation analysis
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.115134
Abstract: We present a comprehensive study of the spin excitations---as measured by the dynamical spin structure factor $S(q,\ensuremath{\omega})$---of the so-called block-magnetic state of low-dimensional orbital-selective Mott insulators. We realize this state via both a multi-orbital Hubbard… read more here.
Keywords: block; spin excitation; selective mott; orbital selective ... See more keywords
Valence skipping, internal doping, and site-selective Mott transition in PbCoO3 under pressure
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DOI: 10.1103/physrevb.104.235101
Abstract: We present a computational study of PbCoO3 at ambient and elevated pressure. We employ the static and dynamic treatment of local correlation in form of density functional theory + U (DFT+U) and + dynamical mean-field… read more here.
Keywords: selective mott; internal doping; mott transition; site selective ... See more keywords
Distinct nature of orbital-selective Mott phases dominated by low-energy local spin fluctuations
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.235119
Abstract: 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… read more here.
Keywords: spin fluctuations; spin; selective mott; orbital selective ... See more keywords