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
Manipulating Weyl quasiparticles by orbital-selective photoexcitation in WTe2
Sign Up to like & getrecommendations! Published in 2021 at "Nature Communications"
DOI: 10.1038/s41467-021-22056-9
Abstract: Optical control of structural and electronic properties of Weyl semimetals allows development of switchable and dissipationless topological devices at the ultrafast scale. An unexpected orbital-selective photoexcitation in type-II Weyl material WTe2 is reported under linearly… read more here.
Keywords: manipulating weyl; weyl; selective photoexcitation; wte2 ... See more keywords
Orbital-selective pairing and superconductivity in iron selenides
Sign Up to like & getrecommendations! Published in 2017 at "npj Quantum Materials"
DOI: 10.1038/s41535-017-0027-6
Abstract: An important challenge in condensed matter physics is understanding iron-based superconductors. Among these systems, the iron selenides hold the record for highest superconducting transition temperature and pose especially striking puzzles regarding the nature of superconductivity.… read more here.
Keywords: selective pairing; iron selenides; iron; orbital selective ... See more keywords
Orbital-selective metals
Sign Up to like & getrecommendations! Published in 2018 at "Nature Materials"
DOI: 10.1038/s41563-018-0173-7
Abstract: The metallic state of an iron chalcogenide superconductor is demonstrated to be characterized by the simultaneous presence of itinerant carriers with different degrees of correlation. This orbital-selective metal arises from a sizeable Hund’s coupling. read more here.
Keywords: orbital selective; selective metals;
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
Emergent orbital-selective many-body effects upon doping strained graphene
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.103.075135
Abstract: We explore the effect of doping on the correlated electronic structure of strained graphene. It is shown that the interplay between sizable multiorbital Coulomb interactions and electron-hole doping induces an orbital-selective electronic state, characterized by… read more here.
Keywords: many body; emergent orbital; orbital selective; strained graphene ... See more keywords
Spin-orbit coupling driven orbital-selective doping effect in Sr2Ru1−xIrxO4
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.103.l081104
Abstract: Orbital-selective phenomena in mutliorbital systems have received much attention due to their uniqueness as well as possible connections to other phenomena. As orbital-selectiveness is mostly related to the crystal structure, finding a new control parameter… read more here.
Keywords: selective doping; orbital selective; doping effect; orbit coupling ... See more keywords
Orbital-selective Mott phase and non-Fermi liquid in FePS3
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.105.l041108
Abstract: The layered metal phosphorous trisulfide FePS3 is reported to be a Mott insulator at ambient conditions and to undergo structural and insulator-metal phase transitions under pressure. However, the character of the resulting metallic states has… read more here.
Keywords: orbital selective; feps3; mott phase; phase ... 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
Orbital-selective superconductivity in the nematic phase of FeSe
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.220503
Abstract: The interplay between electronic orders and superconductivity is central to the physics of unconventional superconductors, and is particularly pronounced in the iron-based superconductors. Motivated by recent experiments on FeSe, we study the superconducting pairing in… read more here.
Keywords: selective superconductivity; nematic phase; orbital selective; superconductivity nematic ... See more keywords
Site and orbital selective correlations in β -Pu
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.125113
Abstract: We investigate the electronic structure of the highly anisotropic $\beta$ phase of metallic plutonium, within the combination of density functional theory (DFT) and dynamical mean field theory (DMFT). Its crystal structure gives rise to site… read more here.
Keywords: site orbital; orbital selective; selective correlations;