Excitonic wave-packet evolution in a two-orbital Hubbard model chain: A real-time real-space study
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.104.l220302
Abstract: Bradraj Pandey, Gonzalo Alvarez, and Elbio Dagotto Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA Computational Sciences… read more here.
Keywords: oak ridge; wave packet; packet evolution; excitonic wave ... See more keywords
Magnetism of competing high-spin/low-spin states in Ba2NiO2(AgSe)2 and related two-orbital two-electron systems
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.105.064406
Abstract: We discuss the thermodynamic and magnetic properties of a competing high-spin/low-spin two-orbital two-electron model on a square-lattice possibly relevant to the nickelates such as Ba2NiO2(AgSe)2 (BNOAS). We focus on parameter regimes where a high-spin (S… read more here.
Keywords: competing high; spin low; low spin; spin ... See more keywords
Pairing tendencies in a two-orbital Hubbard model in one dimension
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.024520
Abstract: The recent discovery of superconductivity under high pressure in the ladder compound BaFe$_2$S$_3$ has opened a new field of research in iron-based superconductors with focus on quasi one-dimensional geometries. In this publication, using the Density… read more here.
Keywords: pairing tendencies; hubbard model; two orbital; orbital hubbard ... See more keywords
Correlations and electronic order in a two-orbital honeycomb lattice model for twisted bilayer graphene
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.245103
Abstract: The recent observation of superconductivity in proximity to an insulating phase in twisted bilayer graphene (TBG) at small `magic' twist angles has been linked to the existence of nearly-flat bands, which make TBG a fresh… read more here.
Keywords: bilayer graphene; honeycomb lattice; model; twisted bilayer ... See more keywords