Long living carriers in a strong electron-phonon interacting two-dimensional doped semiconductor

Abstract

Carrier doping by the electric field effect has emerged recently as an ideal route for monitoring many-body physics in two-dimensional (2D) materials where the Fermi level is tuned in a way that -- indirectly -- the strength of the interactions can also be scanned. The possibility of systematic doping in combination with high resolution photoemission has allowed to uncover a genuinely many-body electron spectrum in single-layer MoS2 transition metal dichalcogenide, resolving three clear quasi-particle states, where only one state should be expected if the electron-phonon interaction vanished. Our analysis combines first-principles and consistent complex plane analytic approaches and brings into light the presence and the physical origin of two gaps and the three quasi-particle bands which are unambiguously present in the photoemission spectrum. One of these states, though being strongly interacting with the accompanying virtual phonon cloud, presents a notably long lifetime which is an appealing property when trying to understand and take advantage of many-body interactions to modulate the transport properties.

arXiv commentEditorially accepted for publication in "Communications Physics" (14 pages, 3 figures)

References in corpus (15)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Phonons and related properties of extended systems from density-functional perturbation theory
• Electron-phonon interactions from first principles
• Evidence for ubiquitous strong electron-phonon coupling in high-temperature superconductors
• Two Dimensional Ising Superconductivity in Gated MoS${}_2$
• Superconductivity protected by spin-valley locking in ion-gated MoS2
• Controlling many-body states by the electric-field effect in a two-dimensional material
• Gate-induced Superconductivity in atomically thin MoS2 crystals
• Many-body Effects in Angle-resolved Photoemission: Quasiparticle Energy and Lifetime of a Mo(110) Surface State
• Tunable polaronic conduction in anatase TiO2
• Tailoring the nature and strength of electron-phonon interactions in the SrTiO${}_3$(001) two-dimensional electron liquid
• Coulomb scattering lifetime of a two-dimensional electron gas
• Holstein polaron in a valley-degenerate two-dimensional semiconductor
• Multi-Valley Superconductivity In Ion-Gated MoS2 Layers
• Gated Tuned Superconductivity and Phonon Softening in Mono- and Bilayer MoS${}_2$

Cited by in corpus (12)

• Ultrafast dynamics of electrons and phonons: from the two-temperature model to the time-dependent Boltzmann equation
• Polarons in two-dimensional atomic crystals
• Unified approach to polarons and phonon-induced band structure renormalization
• Ab initio self-consistent many-body theory of polarons at all couplings
• Two-dimensional plasmonic polarons in n-doped monolayer MoS2
• Dynamical renormalization of electron-phonon coupling in conventional superconductors
• Emergence of large non-adiabatic effects induced by the electron-phonon interaction on the complex vibrational quasi-particle spectrum of the doped monolayer MoS${}_2$
• Holstein polarons, Rashba-like spin splitting and Ising superconductivity in electron-doped MoSe2
• Strong band-filling-dependence of the scattering lifetime in gated MoS2 nanolayers induced by the opening of intervalley scattering channels
• Anomalous metallic phase in molybdenum disulphide induced via gate-driven organic ion intercalation
• Symmetric Helmholtz Fermi-surface harmonics for an optimal representation of anisotropic quantities on the Fermi surface: Application to the electron-phonon problem
• Electron-phonon coupling of Fe-adatom electron states on MgO/Ag(100)