Electron-exciton interactions in the exciton-polaron problem

Abstract

Recently, it has been demonstrated that the absorption of moderately doped two-dimensional semiconductors can be described in terms of exciton-polarons. In this scenario, attractive and repulsive polaron branches are formed due to interactions between a photo-excited exciton and a Fermi sea of excess charge carriers. These interactions have previously been treated in a phenomenological manner. Here, we present a microscopic derivation of the electron-exciton interactions which utilizes a mixture of variational and perturbative approaches. We find that the interactions feature classical charge-dipole behaviour in the long-range limit and that they are only weakly modified for moderate doping. We apply our theory to the absorption properties and show that the dependence on doping is well captured by a model with a phenomenological contact potential.

arXiv comment16 pages, and 10 figures. Published version

References in corpus (75)

• Electric Field Effect in Atomically Thin Carbon Films
• Two-Dimensional Gas of Massless Dirac Fermions in Graphene
• Two-Dimensional Material Nanophotonics
• Observation of tightly bound trions in monolayer MoS2
• Exciton Binding Energy and Nonhydrogenic Rydberg Series in Monolayer WS2
• Excitons in atomically thin transition metal dichalcogenides
• Integrated Circuits Based on Bilayer MoS2 Transistors
• Electrical Control of Two-Dimensional Neutral and Charged Excitons in a Monolayer Semiconductor
• Magnetic Control of Valley Pseudospin in Monolayer WSe2
• Valley Zeeman Effect in Elementary Optical Excitations of a Monolayer WSe2
• Breaking of valley degeneracy by magnetic field in monolayer MoSe2
• Exciton Binding Energy of Monolayer WS2
• Dielectric screening in two-dimensional insulators: Implications for excitonic and impurity states in graphane
• Fermi polaron-polaritons in charge-tunable atomically thin semiconductors
• Enhanced valley splitting in monolayer WSe2 due to magnetic exchange field
• Attractive and repulsive Fermi polarons in two dimensions
• Universal phase diagram of a strongly interacting Fermi gas with unbalanced spin populations
• Polarons, Dressed Molecules, and Itinerant Ferromagnetism in ultracold Fermi gases
• Charged excitons in monolayer WSe${}_2$: experiment and theory
• Absorption of Light by Excitons and Trions in Monolayers of Metal Dichalcogenide MoS${}_2$: Experiments and Theory
• Many-Body Theory of Trion Absorption Features in Two-Dimensional Semiconductors
• Revealing the Biexciton and Trion-exciton Complexes in BN Encapsulated WSe2
• Coulomb drag
• Valley-spin polarized Landau levels in a monolayer semiconductor
• Normal state of highly polarized Fermi gases: Full many-body treatment
• Coulomb-bound four- and five-particle valleytronic states in an atomically-thin semiconductor
• Polarons in the radio-frequency spectrum of a quasi-two-dimensional Fermi gas
• Highly nonlinear trion-polaritons in a monolayer semiconductor
• Charged Excitons in a Dilute 2D Electron Gas in a High Magnetic Field
• Optical properties of charged excitons in two-dimensional semiconductors
• Long-lived charged multiple-exciton complexes in strong magnetic fields
• Binding energies and spatial structures of small carrier complexes in monolayer transition metal dichalcogenides via diffusion Monte Carlo
• Interacting Polaron-Polaritons
• Three-particle Complexes in Two-Dimensional Semiconductors
• The two-dimensional hydrogen atom revisited
• Screened potential of a point charge in a thin film
• Highly polarized Fermi gases in two dimensions
• Theory of exciton-electron scattering in atomically thin semiconductors
• Strongly interacting two-dimensional Fermi gases
• Charged magnetoexcitons in two dimensions: Magnetic translations and families of dark states
• Nonlinear quantum optics with trion-polaritons in 2D monolayers: conventional and unconventional photon blockade
• Observation of coherent multiorbital polarons in a two-dimensional Fermi gas
• Shubnikov-de Haas oscillations in optical conductivity of monolayer MoSe${}_2$
• Polarons and Molecules in a Two-Dimensional Fermi Gas
• Probing Many-Body Interactions in Monolayer Transition-Metal Dichalcogenides
• Excitonic Stark effect in MoS${}_2$ monolayers
• Theory of neutral and charged exciton scattering with electrons in semiconductor quantum wells
• Marrying excitons and plasmons in monolayer transition-metal dichalcogenides
• Dynamical screening in monolayer transition-metal dichalcogenides and its manifestations in the exciton spectrum
• Quantum dynamics of impurities coupled to a Fermi sea
• Well separated trion and neutral excitons on superacid treated MoS2 monolayers
• Excitonic effects in two-dimensional semiconductors: Path integral Monte Carlo approach
• Cross-over from trion-hole to exciton-polaron in n-doped semiconductor quantum wells
• Stark shift of excitons and trions in two-dimensional materials
• Exciton-polarons in doped semiconductors in a strong magnetic field
• Ground and Excited Exciton Polarons in Monolayer MoSe2
• A Many-Body Theory of the Optical Conductivity of Excitons and Trions in Two-Dimensional Materials
• Autoionization and dressing of excited excitons by free carriers in monolayer WSe2
• The onset of exciton absorption in modulation doped GaAs quantum wells
• Trion induced photoluminescence of a doped MoS2 monolayer
• Transport of neutral optical excitations using electric fields
• Many-body theory of optical absorption in doped two-dimensional semiconductors
• Trion ground state, excited states and absorption spectrum using electron-exciton basis
• Accelerating Polaritons with External Electric and Magnetic Fields
• Three-particle states and brightening of intervalley excitons in a doped MoS${}_2$ monolayer
• Supersolidity in electron-hole bilayers with a large density imbalance
• Microscopic model of the doping dependence of line widths in monolayer transition metal dichalcogenides
• Many-body theory of radiative lifetimes of exciton-trion superposition states in doped two-dimensional materials
• The trion: two electrons plus one hole versus one electron plus one exciton
• Charged hydrogenic problem in a magnetic field: Non-commutative translations, unitary transformations, and coherent states
• Exact-diagonalization studies of trion energy spectra in high magnetic fields
• Many-body effects of a two-dimensional electron gas on trion-polaritons
• Single particle polariton properties in doped quantum well microcavities: role of the Fermi edge singularity and Anderson orthogonality catastrophe
• Rotons in Optical Excitation Spectra of Monolayer Semiconductors
• Spectra of heavy polarons and molecules coupled to a Fermi sea

Cited by in corpus (43)

• Exciton-polaron interactions in monolayer WS${}_2$
• Hexcitons and oxcitons in monolayer WSe${}_2$
• Quantum Dynamics of Attractive and Repulsive Polarons in a Doped MoSe${}_2$ Monolayer
• Attractive and repulsive exciton-polariton interactions mediated by an electron gas
• Polaron spectroscopy of a bilayer excitonic insulator
• Many-body exciton and inter-valley correlations in heavily electron-doped WSe${}_2$ monolayers
• Hot carrier extraction from 2D semiconductor photoelectrodes
• Observation of an electronic microemulsion phase emerging from a quantum crystal-to-liquid transition
• Strongly correlated exciton-polarons in twisted homo-bilayer heterostructures
• Effect of fermion indistinguishability on optical absorption of doped two-dimensional semiconductors
• Light-induced topological superconductivity in transition metal dichalcogenide monolayers
• Crossover from exciton polarons to trions in doped two-dimensional semiconductors at finite temperature
• Emergence of 6-particle "hexciton'' states in WS${}_2$ and MoSe${}_2$ monolayers
• Excitonic theory of doping-dependent optical response in atomically thin semiconductors
• A comprehensive study of complex non-adiabatic exciton dynamics in MoSi${}_2$N${}_4$
• Excitons and trions in monolayer semiconductors with correlated electrons
• Exciton-exciton and exciton-charge carrier interaction and the exciton collisional broadening in GaAs/AlGaAs quantum wells
• Polaritons in an electron gas -- quasiparticles and Landau effective interactions
• Interplay of valley polarized dark trion and dark exciton-polaron in monolayer WSe2
• Multidimensional Spectroscopy of Time-Dependent Impurities in Ultracold Fermions
• Nonlinear optical response of resonantly driven polaron-polaritons
• Polaritonic quantisation in nonlocal polar material
• Trion resonance in polariton-electron scattering
• Exact Quantum Virial Expansion for the Optical Response of Doped Two-Dimensional Semiconductors
• Valley-mediated singlet- and triplet-polaron interactions and quantum dynamics in a doped WSe${}_2$ monolayer
• Excitons and trions with negative effective masses in two-dimensional semiconductors
• Efficient calculation of trion energies in monolayer transition metal dichalcogenides
• Exciton interacting with a moiré lattice: Polarons, strings, and optical probing of spin correlations
• Polaritons for testing the universality of an impurity in a Bose-Einstein condensate
• Doping-induced non-Markovian interference causes excitonic linewidth broadening in monolayer WSe${}_2$
• Fermi polaron in atom-ion hybrid systems
• Boson-fermion pairing and condensation in two-dimensional Bose-Fermi mixtures
• Interlayer Fermi polarons of excited exciton states in quantizing magnetic fields
• Impact of an electron Wigner crystal on exciton propagation
• Disorder of Excitons and Trions in Monolayer MoSe2
• Excitonic Bose-polarons in electron-hole bilayers
• Variational and field-theoretical approach to exciton-exciton interactions and biexcitons in semiconductors
• Functional-renormalization-group approach to strongly coupled Bose-Fermi mixtures in two dimensions
• Multiple polaron quasiparticles with dipolar fermions in a bilayer geometry
• Room-temperature tuning and probing of Fermi polarons in atomically thin semiconductors on a plasmonic metasurface
• Exciton interacting with the phonons of an electronic Wigner crystal
• Trion-phonon interaction in atomically thin semiconductors
• Contribution to Excitonic Linewidth from Free Carrier-Exciton Scattering in Layered Materials: The example of h-BN