The strong modulation limit of excitons and trions in moiré materials

Abstract

The optical properties of weakly-doped two-dimensional materials are dominated by strong exciton and trion absorption and luminescence features. In this article we examine the influence of moiré patterns in semiconductor heterobilayers on exciton and trion states in the limit of strong moiré modulation potentials, commenting on similarities and differences compared to the case of excitons and trions in semiconductor quantum dots. We discuss strategies for using optical properties as quantitative probes of moiré materials, and the prospects for exploiting moiré materials to design unique light emitters.

References in corpus (68)

• Magic-angle graphene superlattices: a new platform for unconventional superconductivity
• Correlated Insulator Behaviour at Half-Filling in Magic Angle Graphene Superlattices
• Moire bands in twisted double-layer graphene
• Observation of tightly bound trions in monolayer MoS2
• Tuning superconductivity in twisted bilayer graphene
• Superconductors, Orbital Magnets, and Correlated States in Magic Angle Bilayer Graphene
• Electrical Control of Two-Dimensional Neutral and Charged Excitons in a Monolayer Semiconductor
• Optical Generation of Excitonic Valley Coherence in Monolayer WSe2
• Intrinsic quantized anomalous Hall effect in a moiré heterostructure
• Moiré Excitons in Van der Waals Heterostructures
• Signatures of moiré-trapped valley excitons in MoSe${}_2$/WSe${}_2$ heterobilayers
• Observation of Moiré Excitons in WSe2/WS2 Heterostructure Superlattices
• k.p theory for two-dimensional transition metal dichalcogenide semiconductors
• Optical detection of Mott and generalized Wigner crystal states in WSe2/WS2 moiré superlattices
• Magic continuum in twisted bilayer WSe2
• Magnetic Control of Valley Pseudospin in Monolayer WSe2
• Magic Angle Spectroscopy
• Tunable Phase Boundaries and Ultra-Strong Coupling Superconductivity in Mirror Symmetric Magic-Angle Trilayer Graphene
• Resonantly hybridised excitons in moiré superlattices in van der Waals heterostructures
• Graphene Bilayers with a Twist
• Valley Zeeman Effect in Elementary Optical Excitations of a Monolayer WSe2
• Breaking of valley degeneracy by magnetic field in monolayer MoSe2
• Hubbard model physics in transition metal dichalcogenide moiré bands
• Electric Field Tunable Correlated States and Magnetic Phase Transitions in Twisted Bilayer-Bilayer Graphene
• Abundance of correlated insulating states at fractional fillings of WSe${}_2$/WS${}_2$ moiré superlattices
• Moiré excitons: from programmable quantum emitter arrays to spin-orbit coupled artificial lattices
• Moiré heterostructures as a condensed matter quantum simulator
• Origin of Mott insulating behavior and superconductivity in twisted bilayer graphene
• Maximally-localized Wannier orbitals and the extended Hubbard model for the twisted bilayer graphene
• Valley Splitting and Polarization by the Zeeman Effect in Monolayer MoSe2
• Theory of phonon-mediated superconductivity in twisted bilayer graphene
• Ultraflat bands and shear solitons in Moiré patterns of twisted bilayer transition metal dichalcogenides
• Cascade of electronic transitions in magic-angle twisted bilayer graphene
• Cascade of Phase Transitions and Dirac Revivals in Magic Angle Graphene
• Moiré superlattice in a MoSe${}_2$/hBN/MoSe${}_2$ heterostructure: from coherent coupling of inter- and intra-layer excitons to correlated Mott-like states of electrons
• Twisted Bilayer Graphene: A Phonon Driven Superconductor
• Topological Exciton Bands in Moiré Heterojunctions
• Bright excitons in monolayer transition metal dichalcogenides: from Dirac cones to Dirac saddle points
• Valley depolarization due to inter- and intra-valley electron-hole exchange interactions in monolayer MoS${}_2$
• Exciton band structure of monolayer MoS2
• Correlated Insulating States at Fractional Fillings of the WS2/WSe2 Moiré Lattice
• Exciton fine structure and spin decoherence in monolayers of transition metal dichalcogenides
• Symmetry, maximally localized Wannier states, and low energy model for the twisted bilayer graphene narrow bands
• Theory of optical absorption by interlayer excitons in transition metal dichalcogenide heterobilayers
• Ground State and Hidden Symmetry of Magic Angle Graphene at Even Integer Filling
• Unconventional Superconductivity and Density Waves in Twisted Bilayer Graphene
• Stripe phases in WSe2/WS2 moiré superlattices
• Deep moiré potentials in twisted transition metal dichalcogenide bilayers
• Imaging moiré flat bands in 3D reconstructed WSe2/WS2 superlattices
• $\Gamma$-Valley Transition-Metal-Dichalcogenide Moirè Bands
• Charged Skyrmions and Topological Origin of Superconductivity in Magic Angle Graphene
• Moiré Intralayer Excitons in a MoSe${}_2$/MoS${}_2$ Heterostructure
• Tunable Phases of Moiré Excitons in van der Waals Heterostructures
• Quantum Phase Diagram of a Moiré-Hubbard Model
• Lattice reconstruction induced multiple ultra-flat bands in twisted bilayer WSe2
• Electronic structures, charge transfer and charge orders in twisted transition metal dichalcogenide bilayers
• Origin and Evolution of Ultraflatbands in Twisted Bilayer Transition Metal Dichalcogenides: Realization of Triangular Quantum Dot Array
• Shedding Light on Moire Excitons: A First-Principles Perspective
• Metal-insulator transition in transition metal dichalcogenide heterobilayer moiré superlattices
• Multi-ultraflatbands tunability and effect of spin-orbit coupling in twisted bilayer transition metal dichalcogenides
• Nanoscale Conductivity Imaging of Correlated Electronic States in WSe2/WS2 Moiré Superlattices
• Moiré-trapped interlayer trions in a charge-tunable WSe${}_2$/MoSe${}_2$ heterobilayer
• Optical read-out of Coulomb staircases in a moiré superlattice via trapped interlayer trions
• Reconstruction of moiré lattices in twisted transition metal dichalcogenide bilayers
• Theory of moiré localized excitons in transition-metal dichalcogenide heterobilayers
• Dipolar excitonic insulator in a moire lattice
• Imaging Generalized Wigner Crystal States in a WSe2/WS2 Moiré Superlattice
• Nature of novel moiré exciton states in WSe${}_2$/WS${}_2$ heterobilayers

Cited by in corpus (5)

• Mott-moiré excitons
• Quantum Wigner molecules in moiré materials
• Non-bosonic moiré excitons
• Magnetic properties of moiré quantum dot arrays
• Artificial versus Natural Atoms: The uncanny capability of the many-body Schrödinger equation to produce emergent behavior