Impact of strain on the excitonic linewidth in transition metal dichalcogenides

Abstract

Monolayer transition metal dichalcogenides (TMDs) are known to be highly sensitive to externally applied tensile or compressive strain. In particular, strain can be exploited as a tool to control the optical response of TMDs. However, the role of excitonic effects under strain has not been fully understood yet. Utilizing the strain-induced modification of electron and phonon dispersion obtained by first principle calculations, we present in this work microscopic insights into the strain-dependent optical response of various TMD materials. In particular, we explain recent experiments on the change of excitonic linewidths in strained TMDs and predict their behavior for tensile and compressive strain at low temperatures.

arXiv comment7 pages, 7 figures

References in corpus (28)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Atomically thin MoS2: A new direct-gap semiconductor
• Phonons and related properties of extended systems from density-functional perturbation theory
• Observation of tightly bound trions in monolayer MoS2
• Bandgap Engineering of Strained Monolayer and Bilayer MoS2
• Local strain engineering in atomically thin MoS2
• Computational 2D Materials Database: Electronic Structure of Transition-Metal Dichalcogenides and Oxides
• Experimental demonstration of continuous electronic structure tuning via strain in atomically thin MoS2
• Theory of Neutral and Charged Excitons in Monolayer Transition Metal Dichalcogenides
• Quasiparticle band structures and optical properties of strained monolayer MoS2 and WS2
• Elastic Properties of Chemical-Vapor-Deposited Monolayer MoS2, WS2, and Their Bilayer Heterostructures
• Excitonic linewidth approaching the homogeneous limit in MoS2 based van der Waals heterostructures : accessing spin-valley dynamics
• Excitonic linewidth and coherence lifetime in monolayer transition metal dichalcogenides
• Intrinsic Transport Properties of Electrons and Holes in Monolayer Transition Metal Dichalcogenides
• Tight-binding model and direct-gap/indirect-gap transition in single-layer and multi-layer MoS${}_2$
• Strain-dependent modulation of conductivity in single layer transition-metal dichalcogenides
• Biaxial strain tuning of the optical properties of single-layer transition metal dichalcogenides
• Optical imaging of strain in two-dimensional crystals
• Phonon Softening and Direct to Indirect Bandgap Crossover in Strained Single Layer MoSe2
• Analytical approach to excitonic properties of MoS2
• Dark excitons in transition metal dichalcogenides
• Precise and reversible band gap tuning in single-layer MoSe2 by uniaxial strain
• Phonon Sidebands in Transition Metal Dichalcogenides
• Exciton Relaxation Cascade in Two-dimensional Transition-metal dichalcogenides
• Many-body and spin-orbit effects on direct-indirect band gap transition of strained monolayer MoS${}_2$ and WS${}_2$
• Impact of strain on the optical fingerprint of monolayer transition metal dichalcogenides
• Marrying excitons and plasmons in monolayer transition-metal dichalcogenides
• Optical fingerprint of dark 2p-states in transition metal dichalcogenides

Cited by in corpus (38)

• Exciton physics and device application of two-dimensional transition metal dichalcogenide semiconductors
• Phonon-assisted Photoluminescence from Dark Excitons in Monolayers of Transition Metal Dichalcogenides
• Multipath optical recombination of intervalley dark excitons and trions in monolayer WSe${}_2$
• Exciton-Scattering-Induced Dephasing in Two-Dimensional Semiconductors
• Exciton optics, dynamics and transport in atomically thin semiconductors
• Strain control of hybridization between dark and localized excitons in a 2D semiconductor
• Nonclassical Exciton Diffusion in Monolayer WSe2
• Distinctive signatures of the spin- and momentum-forbidden dark exciton states in the photo-luminescences of strained WSe${}_2$ monolayers under thermalization
• Disentangling the effects of doping, strain and defects in monolayer WS2 by optical spectroscopy
• Strain-dependent exciton diffusion in transition metal dichalcogenides
• Brightening of spin- and momentum-dark excitons in transition metal dichalcogenides
• Phonon-assisted inter-valley scattering determines ultrafast exciton dynamics in MoSe${}_2$ bilayers
• Temporal evolution of low-temperature phonon sidebands in WSe${}_2$ monolayers
• Imaging dynamic exciton interactions and coupling in transition metal dichalcogenides
• Dark-exciton based strain sensing in transition metal dichalcogenides
• Exciton fine structure splitting and linearly polarized emission in strained transition-metal dichalcogenide monolayers
• Strong coupling regime and hybrid quasinormal modes of a single plasmonic resonator coupled to a TMDC monolayer
• Visualization of dark excitons in semiconductor monolayers for high-sensitivity strain sensing
• Superconductivity and strain-enhanced phase stability of Janus tungsten chalcogenide hydride monolayers
• Phonon-assisted Exciton Dissociation in Transition Metal Dichalcogenides
• Probing Dark Excitons in Monolayer MoS${}_2$ by NonLinear Two-Photon Spectroscopy
• Coupling of MoS${}_2$ Excitons with Lattice Phonons and Cavity Vibrational Phonons in Hybrid Nanobeam Cavities
• Impact of atomic reconstruction on optical spectra of twisted TMD homobilayers
• Cathodoluminescence spectroscopy of monolayer hexagonal boron nitride
• Theory of the Coherent Response of Magneto-Excitons and Magneto-Biexcitons in Monolayer Transition Metal Dichalcogenides
• Tensile strain induced brightening of momentum forbidden dark exciton in WS${}_2$
• Impact of optically pumped non-equilibrium steady states on luminescence emission of atomically-thin semiconductor excitons
• Large trion binding energy in monolayer WS${}_2$ via strain-enhanced electron-phonon coupling
• Polarization and charge-separation of moiré excitons in van der Waals heterostructures
• Fabrication of high-quality PMMA/SiO${}_x$ spaced planar microcavities for strong coupling of light with monolayer WS${}_2$ excitons
• Biaxial strain tuning of exciton energy and polarization in monolayer WS2
• Two dimensional semiconductors: optical and electronic properties
• Bichromatic four-wave mixing and quadrature-squeezing from biexcitons in atomically thin semiconductor microcavities
• Pyroelectric doping reversal of MoS2 p-n junctions on ferroelectric domain walls probed by photoluminescence
• Theory of interlayer exciton dynamics in 2D TMDCs Heterolayers under the influence of strain reconstruction and disorder
• Laterally Extended States of Interlayer Excitons in Reconstructed MoSe${}_2$/WSe${}_2$ Heterostructures
• Strain-induced exciton mobility in layered WS2 from first principles
• Efficient quadrature-squeezing from biexcitonic parametric gain in atomically thin semiconductors