Quantum interference effect on exciton transport in monolayer semiconductors

Abstract

We study theoretically weak localization of excitons in atomically-thin transition metal dichalcogenides. The constructive interference of excitonic de Broglie waves on the trajectories forming closed loops results in a decrease of the exciton diffusion coefficient. We calculate the interference contribution to the diffusion coefficient for the experimentally relevant situation of exciton scattering by acoustic phonons and static disorder. For the acoustic phonon scattering, the quantum interference becomes more and more important with increasing the temperature. Our estimates show that the quantum contribution to the diffusion coefficient is considerable for the state-of-the-art monolayer and bilayer transition metal dichalcogenides.

arXiv comment6 pages, 3 figures

References in corpus (31)

• Atomically thin MoS2: A new direct-gap semiconductor
• Coupled spin and valley physics in monolayers of MoS2 and other group-VI dichalcogenides
• Excitons in atomically thin transition metal dichalcogenides
• Anderson Transitions
• First-principles study of the phonon-limited mobility in n-type single-layer MoS2
• Excitonic linewidth and coherence lifetime in monolayer transition metal dichalcogenides
• Exciton Radiative Lifetime in Transition Metal Dichalcogenide Monolayers
• Intrinsic Transport Properties of Electrons and Holes in Monolayer Transition Metal Dichalcogenides
• Valley contrasting chiral phonons in monolayer hexagonal lattices
• Exciton diffusion and halo effects in monolayer semiconductors
• Nonlinear Photoluminescence in Atomically Thin Layered WSe2 Arising from Diffusion-Assisted Exciton-Exciton Annihilation
• Transport Theory of Monolayer Transition-Metal Dichalcogenides through Symmetry
• Control of biaxial strain in single-layer Molybdenite using local thermal expansion of the substrate
• Interaction effects and phase relaxation in disordered systems
• Valley Phonons and Exciton Complexes in a Monolayer Semiconductor
• Phonon Sidebands in Transition Metal Dichalcogenides
• Exciton diffusion in WSe2 monolayers embedded in a van der Waals heterostructure
• Exciton-phonon coupling in MoSe2 monolayers
• Exciton-exciton interaction in transition-metal dichalcogenide monolayers
• Exciton diffusion in monolayer semiconductors with suppressed disorder
• Quantum diffusion of dipole-oriented indirect excitons in coupled quantum wells
• Exciton propagation and halo formation in two-dimensional materials
• Intrinsic Lifetime of Higher Excitonic States in Tungsten Diselenide Monolayers
• Phonon wind and drag of excitons in monolayer semiconductors
• Polaron mobility in the "beyond quasiparticles" regime
• Exciton-phonon relaxation bottleneck and radiative decay of thermal exciton reservoir in two-dimensional materials
• Quantum and classical multiple scattering effects in spin dynamics of cavity polaritons
• Intervalley Polaron in Atomically Thin Transition Metal Dichalcogenides
• Weak localization in boron nitride encapsulated bilayer MoS${}_2$
• Quantum Interference Controls the Electron Spin Dynamics in n-GaAs
• Spin-dependent coherent transport of two-dimensional excitons

Cited by in corpus (15)

• Fast and anomalous exciton diffusion in two-dimensional hybrid perovskites
• Exciton optics, dynamics and transport in atomically thin semiconductors
• Nonclassical Exciton Diffusion in Monolayer WSe2
• Efficient phonon cascades in hot photoluminescence of WSe${}_2$ monolayers
• Electron recoil effect in electrically tunable MoSe2 monolayers
• Skew Scattering and Side Jump Drive Exciton Valley Hall Effect in Two-Dimensional Crystals
• Control of the exciton valley dynamics in van der Waals heterostructures
• Phonon-induced exciton weak localization in two-dimensional semiconductors
• Coherent spin dynamics of excitons in strained monolayer semiconductors
• Two dimensional semiconductors: optical and electronic properties
• Viscous hydrodynamics of excitons in van der Waals heterostructures
• Impact of an electron Wigner crystal on exciton propagation
• Terahertz radiation induced attractive-repulsive Fermi polaron conversion in transition metal dichalcogenide monolayers
• Limits of funneling efficiency in non-uniformly strained 2D semiconductors
• Trion-phonon interaction in atomically thin semiconductors