Photoinduced renormalization of Dirac states in BaNiS${}_2$

Abstract

By means of pump-probe time- and angle-resolved photoelectron spectroscopy, we provide evidence of a sizeable reduction of the Fermi velocity of out-of-equilibrium Dirac bands in the quasi-two-dimensional semimetal BaNiS${}_2$. First-principle calculations indicate that this band renormalization is ascribed to a change in non-local electron correlations driven by a photo-induced enhancement of screening properties. This effect is accompanied by a slowing down of the Dirac fermions and by a non-rigid shift of the bands at the center of the Brillouin zone. This result suggests that other similar electronic structure renormalizations may be photoinduced in other materials in presence of strong non-local correlations.

References in corpus (29)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Advanced capabilities for materials modelling with Quantum ESPRESSO
• Weyl and Dirac Semimetals in Three Dimensional Solids
• Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
• Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi
• Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)
• Dirac semimetal in three dimensions
• Dielectric function, screening, and plasmons in 2D graphene
• Observation of Floquet-Bloch states on the surface of a topological insulator
• Experimental Realization of a Three-Dimensional Dirac Semimetal
• Creating, moving and merging Dirac points with a Fermi gas in a tunable honeycomb lattice
• Dirac Semimetals in Two Dimensions
• Magnetic field driven metal-insulator phase transition in planar systems
• Ubiquitous formation of bulk Dirac cones and topological surface states from a single orbital manifold in transition-metal dichalcogenides
• Ultrafast modification of Hubbard $U$ in a strongly correlated material: ab initio high-harmonic generation in NiO
• Ultrafast Electronic Band Gap Control in an Excitonic Insulator
• Tuning a Schottky barrier in a photoexcited topological insulator with transient Dirac cone electron-hole asymmetry
• Ultrafast Band Structure Control of a Two-Dimensional Heterostructure
• Attosecond screening dynamics mediated by electron-localization
• Beyond the molecular movie: dynamics of bands and bonds during a photo-induced phase transition
• Influence of Fock exchange in combined many-body perturbation and dynamical mean field theory
• Similar ultrafast dynamics of several dissimilar Dirac and Weyl semimetals
• Multi-band non-equilibrium GW+EDMFT formalism for correlated insulators
• Electron transport in nodal-line semimetals
• Light-induced renormalization of the Dirac quasiparticles in the nodal-line semimetal ZrSiSe
• Dynamics of photo-doped charge transfer insulators
• Electron-hole balanced dynamics in the type-II Weyl semimetal candidate WTe2
• Ultrafast filling of an electronic pseudogap in an incommensurate crystal
• Importance of non-local electron correlations in BaNiS${}_2$ semimetal from quantum oscillations studies

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• Dichroism in time-resolved ARPES and valence band orbital nature in BaNiS2
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