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
Orbital-Selective Instabilities and Spin Fluctuations at the Verge of Superconductivity in Interlayer-Expanded Iron Selenide
Sign Up to like & getrecommendations! Published in 2025 at "Chemistry of Materials"
DOI: 10.1021/acs.chemmater.5c01488
Abstract: Understanding electron correlation-driven instabilities and their coupling to structural phases is essential for deciphering multiorbital pairing in unconventional superconductors. We investigate Li x (C5H5N) y Fe2Se2 (x ∼ 0.6; y ∼ 0.7–0.9), a tetragonal β-FeSe… read more here.
Keywords: spectroscopy; selective instabilities; instabilities spin; spin fluctuations ... 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 commensurate modulations of the local density of states in ScV6Sn6 probed by nuclear spins
Sign Up to like & getrecommendations! Published in 2024 at "Nature Communications"
DOI: 10.1038/s41467-024-52456-6
Abstract: The kagome network is a unique platform that harbors a diversity of special electronic states due to its inherent band structure features comprising Dirac cones, van Hove singularities, and flat bands. Some kagome-based metals have… read more here.
Keywords: local density; modulations local; density states; density ... 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
Orbital selective order and Z3 Potts nematicity from a non-Fermi liquid
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review B"
DOI: 10.1103/physrevb.110.165158
Abstract: Motivated by systems where a high temperature non-Fermi liquid gives way to low temperature $\mathbb{Z}_3$ Potts nematic order, we studied a three-orbital Sachdev-Ye-Kitaev (SYK) model in the large-$N$ limit. In the single-site limit, this model… read more here.
Keywords: temperature; fermi liquid; non fermi; mml mml ... See more keywords