Topological Exciton Bands in Moiré Heterojunctions

Abstract

Moiré patterns are common in Van der Waals heterostructures and can be used to apply periodic potentials to elementary excitations. We show that the optical absorption spectrum of transition metal dichalcogenide bilayers is profoundly altered by long period moiré patterns that introduce twist-angle dependent satellite excitonic peaks. Topological exciton bands with non-zero Chern numbers that support chiral excitonic edge states can be engineered by combining three ingredients: i) the valley Berry phase induced by electron-hole exchange interactions, ii) the moiré potential, and iii) the valley Zeeman field.

5+5 pages, 4+3 figures

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Cited by in corpus (152)

• 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
• Resonantly hybridised excitons in moiré superlattices in van der Waals heterostructures
• Topological insulators in twisted transition metal dichalcogenide homobilayers
• Hubbard model physics in transition metal dichalcogenide moiré bands
• Observation of topological polaritons and photonic magic angles in twisted van der Waals bi-layers
• Moiré excitons: from programmable quantum emitter arrays to spin-orbit coupled artificial lattices
• Moiré heterostructures as a condensed matter quantum simulator
• Theory of phonon-mediated superconductivity in twisted bilayer 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
• Valley Manipulation by Optically Tuning the Magnetic Proximity Effect in WSe${}_2$/CrI${}_3$ Heterostructures
• Theory of optical absorption by interlayer excitons in transition metal dichalcogenide heterobilayers
• Atomic reconstruction and moiré patterns in transition metal dichalcogenide van der Waals heterostructures
• Moiré Hyperbolic Metasurfaces
• One-Dimensional Moiré Excitons in Transition-Metal Dichalcogenide Heterobilayers
• Atomically thin mirrors made of monolayer semiconductors
• Twisted Nano-optics: Manipulating Light at the Nanoscale with Twisted Phonon Polaritonic Slabs
• Van der Waals Heterostructure Polaritons with moiré-Induced Nonlinearity
• Topological Quantum Optics in Two-Dimensional Atomic Arrays
• Band topology, Hubbard model, Heisenberg model, and Dzyaloshinskii-Moriya interaction in twisted bilayer WSe${}_2$
• Multi-flat bands and strong correlations in Twisted Bilayer Boron Nitride
• Broken mirror symmetry in excitonic response of reconstructed domains in twisted MoSe${}_2$/MoSe${}_2$ bilayers
• Moiré Excitons Correlated with Superlattice Structure in Twisted WSe${}_2$/WSe${}_2$ Homobilayers
• Twist Angle Dependent Interlayer Exciton Lifetimes in van der Waals Heterostructures
• Brightened spin-triplet interlayer excitons and optical selection rules in van der Waals heterobilayers
• Interlayer hybridization and moiré superlattice minibands for electrons and excitons in heterobilayers of transition-metal dichalcogenides
• Electrical tuning of layer-polarized exciton gases in WSe2 bilayers
• Microsecond dark-exciton valley polarization memory in 2D heterostructures
• Moiré Intralayer Excitons in a MoSe${}_2$/MoS${}_2$ Heterostructure
• Tunable Phases of Moiré Excitons in van der Waals Heterostructures
• Moiré Potential Impedes Interlayer Exciton Diffusion in van der Waals Heterostructures
• Enhanced Optoelectronic Response in Bilayer Lateral Heterostructures of Transition Metal Dichalcogenides
• Resolving spin, valley, and moiré quasi-angular momentum of interlayer excitons in WSe2/WS2 heterostructures
• Quantum-Confined Electronic States arising from Moiré Pattern of MoS2-WSe2 Hetero-bilayers
• Correlated insulator of excitons in WSe2/WS2 moiré superlattices
• Excitons in mesoscopically reconstructed moiré heterostructures
• Shedding Light on Moire Excitons: A First-Principles Perspective
• Polarization-driven band topology evolution in twisted MoTe${}_2$ and WSe${}_2$
• Moiré excitons in MoSe${}_2$-WSe${}_2$ heterobilayers and heterotrilayers
• Cavity-control of bright and dark interlayer excitons in van der Waals heterostructures
• Localized bright luminescence of indirect excitons and trions in MoSe${}_2$/WSe${}_2$ van der Waals heterostructure
• Hybridized intervalley moiré excitons and flat bands in twisted WSe${}_2$ bilayers
• Diffusivity Reveals Three Distinct Phases of Interlayer Excitons in MoSe2/WSe2 Heterobilayers
• Hyperspectral imaging of excitons within a moiré unit-cell with a sub-nanometer electron probe
• Creation of moiré bands in a monolayer semiconductor by spatially periodic dielectric screening
• Topological phonons in oxide perovskites controlled by light
• Roadmap for Photonics with 2D Materials
• Spin-Orbit Coupling in Transition Metal Dichalcogenide Heterobilayer Flat Bands
• Exciton band topology in spontaneous quantum anomalous Hall insulators: applications to twisted bilayer graphene
• Moiré and beyond in transition metal dichalcogenide twisted bilayers
• Tunable moiré materials for probing Berry physics and topology
• Observation of bosonic condensation in a hybrid monolayer MoSe2-GaAs microcavity
• Moiré-Bose-Hubbard model for interlayer excitons in twisted transition metal dichalcogenide heterostructures
• Topological Phases in Magnonics
• Quadrupolar Excitons and Hybridized Interlayer Mott Insulator in a Trilayer Moiré Superlattice
• Multi-gap topology and non-Abelian braiding of phonons from first principles
• Competing magnetic states in transition metal dichalcogenide moiré materials
• Theory of tunable flux lattices in the homobilayer moiré of twisted and uniformly strained transition metal dichalcogenides
• Electrically controlled emission from singlet and triplet exciton species in atomically thin light emitting diodes
• Localized Excitons in NbSe${}_2$-MoSe${}_2$ Heterostructures
• Twist Angle Tuning of Moiré Exciton Polaritons in van der Waals Heterostructures
• Model Prediction of Self-Rotating Excitons in Two-Dimensional Transition-Metal Dichalcogenides
• Emergent geometric frustration and flat band in moiré bilayer graphene
• Exciton Proliferation and Fate of the Topological Mott Insulator in a Twisted Bilayer Graphene Lattice Model
• Floquet engineering of twisted double bilayer graphene
• Magnetic Proximity Effect in a van der Waals Moiré Superlattice
• Emergence of highly linearly polarized interlayer exciton emission in MoSe${}_2$/WSe${}_2$ heterobilayers with transfer-induced layer corrugation
• Optically Probing Tunable Band Topology in Atomic Monolayers
• Observation of drastic electronic structure change in one-dimensional moiré crystals
• Degenerate topological line surface phonons in quasi-1D double helix crystal SnIP
• Theory of moiré localized excitons in transition-metal dichalcogenide heterobilayers
• Massive Dirac fermions in moiré superlattices: a route towards topological flat minibands
• Light-matter interaction in van der Waals heterostructures
• Interlayer Charge Transfer and Defect Creation in Type I van der Waals Heterostructures
• Engineering photonic environments for two-dimensional materials
• Transport and localization of indirect excitons in a van der Waals heterostructure
• Voltage-controlled long-range propagation of indirect excitons in van der Waals heterostructure
• Optical signature of cascade transitions between moiré interlayer excitons
• Field-induced hybridization of moiré excitons in MoSe${}_2$/WS${}_2$ heterobilayers
• Observation of room temperature excitons in an atomically thin topological insulator
• Mott-moiré excitons
• Leaky exciton condensates in transition metal dichalcogenide moiré bilayers
• Duality between atomic configurations and Bloch states in twistronic materials
• Signatures of electric field and layer separation effects on the spin-valley physics of MoSe${}_2$/WSe${}_2$ heterobilayers: from energy bands to dipolar excitons
• Visualizing band structure hybridization and superlattice effects in twisted MoS${}_2$/WS${}_2$ heterobilayers
• Topological spin phases of trapped Rydberg excitons in Cu${}_2$O
• The strong modulation limit of excitons and trions in moiré materials
• Interlayer exciton-polaron in atomically thin semiconductors
• Exotic dielectric behaviors induced by pseudo-spin texture in magnetic twisted bilayer
• Anomalous exciton transport in response to a uniform, in-plane electric field
• Long-lived Topological Flatband Excitons in Semiconductor Moiré Heterostructures: a Bosonic Kane-Mele Model Platform
• Twist versus heterostrain control of optical properties of moiré exciton minibands
• Quantum Geometric Exciton Drift Velocity
• Thickness and twist angle dependent interlayer excitons in metal monochalcogenide heterostructures
• Confined Trions and Mott-Wigner States in a Purely Electrostatic Moiré Potential
• Finite-size Topology
• Excitons and trions in monolayer semiconductors with correlated electrons
• Interaction-induced crystalline topology of excitons
• Chiral Topological Excitons in a Chern Band Insulator
• Interlayer donor-acceptor pair excitons in MoSe2/WSe2 moiré heterobilayer
• WSe2/WS2 moiré superlattices: a new Hubbard model simulator
• A simple approach to characterizing band topology in bosonic pairing Hamiltonians
• Accurate force-field methodology capturing atomic reconstructions in transition metal dichalcogenide moiré systems
• Doping a Wigner-Mott insulator: Exotic charge orders in transition-metal dichalcogenide moiré heterobilayers
• Spatiotemporal dynamics of moiré excitons in van der Waals heterostructures
• Probing excitons with time-resolved momentum microscopy
• Plasmonic Quantum Dots in Twisted Bilayer Graphene
• Superradiance of Strongly Interacting Dipolar Excitons in Moiré Quantum Materials
• Symmetric Wannier states and tight-binding model for quantum spin Hall bands in AB-stacked MoTe${}_2$/WSe${}_2$
• Moiré excitons in biased twisted bilayer graphene under pressure
• Hybrid moiré excitons and trions in twisted MoTe${}_2$-MoSe${}_2$ heterobilayers
• Textured Exciton Insulators
• Electromagnetic field assisted exciton diffusion in moiré superlattices
• Valley-exchange coupling probed by angle-resolved photoluminescence
• Collective optical properties of moiré excitons
• Moiré Band Engineering in Twisted Trilayer WSe2
• Anomalous magneto-optical response and chiral interface of dipolar excitons at twisted valleys
• Long-distance decay-less spin transport in indirect excitons in a van der Waals heterostructure
• Symmetry Classification for Alternating Excitons in Two-Dimensional Altermagnets
• Excitons in periodic potentials
• Exciton interacting with a moiré lattice: Polarons, strings, and optical probing of spin correlations
• Searching for Unconventional Superfluid in Excitons of Monolayer Semiconductors
• Coupled exciton internal and center-of-mass motions in two-dimensional semiconductors by a periodic electrostatic potential
• Quantum Hall effects of exciton condensate in topological flat bands
• Moiré lattice-induced formation and tuning of hybrid dipolar excitons in twisted WS${}_2$/MoSe${}_2$ heterobilayers
• Förster valley-orbit coupling and topological lattice of hybrid moiré excitons
• Quantum Internal Structure of Plasmons
• Single photon emitters with polarization and orbital angular momentum locking in monolayer semiconductors
• Twistronics and moiré superlattice physics in 2D transition metal dichalcogenides
• Exciton Berryology
• AC-Stark Spectroscopy of Interactions between Moiré Excitons and Polarons
• Topologically-enhanced exciton transport
• Highly tunable quantum light from moiré trapped excitons
• One-dimensional Dexter-type excitonic topological phase transition
• Exciton fractional Chern insulators in moiré heterostructures
• Electrically tunable MoSe${}_2$/WSe${}_2$ heterostructure-based quantum dot
• Photo-physics and electronic structure of lateral graphene/MoS2 and metal/MoS2 junctions
• Hierarchical Disorder in Moiré Exciton Photoluminescence Probed by Spectral-Descriptor Correlations
• Long-range spatial extension of exciton states in van der Waals heterostructure
• Observation of Photoluminescence from a Natural van der Waals Heterostructure
• Engineering topological exciton structures in two-dimensional semiconductors by a periodic electrostatic potential
• Moiré potential, lattice corrugation, and band gap spatial variation in a twist-free MoS2/MoTe2 heterobilayer
• Stripe antiferromagnetism and chiral superconductivity in tWSe${}_2$
• Optical selection rules of topological excitons in flat bands
• Radial Rashba spin-orbit fields in commensurate twisted transition-metal dichalcogenide bilayers
• Non-local interactions and supersolidity of moiré excitons
• Vibrational Properties of a Naturally Occurring Semiconducting van der Waals heterostructure
• Effective long-range attraction of moiré excitons under the influence of atomic reconstructions and anisotropic screening
• Twister: Construction and structural relaxation of commensurate moiré superlattices
• Emergent exotic chirality dependent dielectricity in magnetic twisted bilayer system
• Graphene as a Tunable Nonradiative Bath for Moiré Excitons