Realization of Nearly Dispersionless Bands with Strong Orbital Anisotropy from Destructive Interference in Twisted Bilayer MoS2

Abstract

Recently, the twist angle between adjacent sheets of stacked van der Waals materials emerged as a new knob to engineer correlated states of matter in two-dimensional heterostructures in a controlled manner, giving rise to emergent phenomena such as superconductivity or correlated insulating states. Here,we use an ab initio based approach to characterize the electronic properties of twisted bilayer MoS2. We report that, in marked contrast to twisted bilayer graphene, slightly hole-doped MoS2 realizes a strongly asymmetric px-py Hubbard model on the honeycomb lattice, with two almost entirely dispersionless bands emerging due to destructive interference. We study the collective behavior of twisted bilayer MoS2 in the presence of interactions, and characterize an array of different magnetic and orbitally-ordered correlated phases,which may be susceptible to quantum fluctuations giving rise to exotic, purely quantum, states of matter.

References in corpus (57)

• Atomically thin MoS2: A new direct-gap semiconductor
• Magic-angle graphene superlattices: a new platform for unconventional superconductivity
• VASPKIT: A User-friendly Interface Facilitating High-throughput Computing and Analysis Using VASP Code
• Correlated Insulator Behaviour at Half-Filling in Magic Angle Graphene Superlattices
• Moire bands in twisted double-layer graphene
• Tuning superconductivity in twisted bilayer graphene
• How does quantum confinement influence the electronic structure of transition metal sulfides TmS2
• Superconductors, Orbital Magnets, and Correlated States in Magic Angle Bilayer Graphene
• Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2
• 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
• Bismuthene on a SiC Substrate: A Candidate for a New High-Temperature Quantum Spin Hall Paradigm
• Magic continuum in twisted bilayer WSe2
• Magic Angle Spectroscopy
• Resonantly hybridised excitons in moiré superlattices in van der Waals heterostructures
• Topological insulators in twisted transition metal dichalcogenide homobilayers
• Tunable Correlated Chern Insulator and Ferromagnetism in Trilayer Graphene/Boron Nitride Moiré Superlattice
• Hubbard model physics in transition metal dichalcogenide moiré bands
• Atomic and electronic reconstruction at van der Waals interface in twisted bilayer graphene
• Imaging Electronic Correlations in Twisted Bilayer Graphene near the Magic Angle
• Electric Field Tunable Correlated States and Magnetic Phase Transitions in Twisted Bilayer-Bilayer Graphene
• Spin-polarized Correlated Insulator and Superconductor in Twisted Double Bilayer Graphene
• Moiré heterostructures as a condensed matter quantum simulator
• Flat bands and Wigner crystallization in the honeycomb optical lattice
• Correlated states in twisted double bilayer graphene
• Untying the insulating and superconducting orders in magic-angle graphene
• Direct observation of Dirac cones and a flatband in a honeycomb lattice for polaritons
• Ultraflat bands and shear solitons in Moiré patterns of twisted bilayer transition metal dichalcogenides
• Electronic properties of graphene-based bilayer systems
• Faithful Tight-binding Models and Fragile Topology of Magic-angle Bilayer Graphene
• Giant and tunable valley degeneracy splitting in MoTe2
• Superconductivity without insulating states in twisted bilayer graphene stabilized by monolayer WSe${}_2$
• Model for Metal-Insulator Transition in Graphene Superlattices and Beyond
• Correlated Insulating States in Twisted Double Bilayer Graphene
• Flat Chern Band in a Two-Dimensional Organometallic Framework
• Exotic electronic states in the world of flat bands: from theory to material
• Strong Correlations and d+id Superconductivity in Twisted Bilayer Graphene
• Tunable correlation-driven symmetry breaking in twisted double bilayer graphene
• The $p_{x,y}$-orbital counterpart of graphene: cold atoms in the honeycomb optical lattice
• $\Gamma$-Valley Transition-Metal-Dichalcogenide Moirè Bands
• Multi-flat bands and strong correlations in Twisted Bilayer Boron Nitride
• Moiré Excitons Correlated with Superlattice Structure in Twisted WSe${}_2$/WSe${}_2$ Homobilayers
• Correlations and electronic order in a two-orbital honeycomb lattice model for twisted bilayer graphene
• Electrically tunable valley dynamics in twisted WSe${}_2$/WSe${}_2$ bilayers
• Orbital ordering and frustration of $p$-band Mott-insulators
• One-dimensional flat bands in twisted bilayer germanium selenide
• The honeycomb lattice with multi-orbital structure: topological and quantum anomalous Hall insulators with large gaps
• Orbital ordering and frustrations
• Origin and Evolution of Ultraflatbands in Twisted Bilayer Transition Metal Dichalcogenides: Realization of Triangular Quantum Dot Array
• Derivation of Wannier orbitals and minimal-basis tight-binding hamiltonians for twisted bilayer graphene: a first-principles approach
• A Z${}_2$ spin-orbital liquid state in the square lattice Kugel-Khomskii model
• SU(4) Heisenberg model on the honeycomb lattice with exchange-frustrated perturbations: implications for twistronics and Mott insulators
• Many-body effects in twisted bilayer graphene at low twist angles
• Exploring the spin-orbital ground state of Ba3CuSb2O9
• $F$-wave pairing of cold atoms in optical lattices
• Spin density wave and electron nematicity in magic-angle twisted bilayer graphene