Interaction range and temperature dependence of symmetry breaking in strongly correlated two-dimensional moiré transition metal dichalcogenide bilayers

Abstract

We theoretically consider two-dimensional moiré transition metal dichalcogenide (TMD) bilayers, which are strongly correlated in the sense that the on-site Coulomb interaction is comparable to or larger than the hopping kinetic energy between the moiré lattice sites. The system accommodates many symmetry-broken ground states both in charge and isospin sectors at various commensurate rational fillings such as 1/2, 1/3, 1/4, 2/3, etc. We investigate two complementary important aspects of the dependence of the symmetry breaking on (1) the range of the electron-electron interaction, which can in principle be experimentally controlled by the nearby gates and the dielectric environment, and (2) temperature, which could thermally suppress the symmetry breaking above a critical temperature. Experimental implications of the theory are discussed.

5 pages, 3 figures

References in corpus (15)

• Abundance of correlated insulating states at fractional fillings of WSe${}_2$/WS${}_2$ moiré superlattices
• Quantum anomalous Hall effect from intertwined moiré bands
• Continuous Mott transition in semiconductor moiré superlattices
• Correlated Insulating States at Fractional Fillings of the WS2/WSe2 Moiré Lattice
• Quantum Criticality in Twisted Transition Metal Dichalcogenides
• Signatures of bilayer Wigner crystals in a transition metal dichalcogenide heterostructure
• Stripe phases in WSe2/WS2 moiré superlattices
• Band topology, Hubbard model, Heisenberg model, and Dzyaloshinskii-Moriya interaction in twisted bilayer WSe${}_2$
• Quantum Phase Diagram of a Moiré-Hubbard Model
• Hartree-Fock study of the moiré Hubbard model for twisted bilayer transition metal dichalcogenides
• Excitonic and valleytronic signatures of correlated states at fractional fillings of a moiré superlattice
• Charge-order-enhanced capacitance in semiconductor moiré superlattices
• Metal-insulator transition in transition metal dichalcogenide heterobilayer moiré superlattices
• Interaction-Driven Filling-Induced Metal-Insulator Transitions in 2D Moiré Lattices
• Competing magnetic states in transition metal dichalcogenide moiré materials

Cited by in corpus (15)

• Topological Phases in AB-Stacked MoTe${}_2$/WSe${}_2$: ${\mathbb{Z}}_2$ Topological Insulators, Chern Insulators, and Topological Charge Density Waves
• Magnetism and Quantum Melting in Moiré-Material Wigner Crystals
• Mixed singlet-triplet superconducting state within the moiré $t$-$J$-$U$ model as applied to the description of twisted WSe${}_2$ bilayer
• Theory of a continuous bandwidth-tuned Wigner-Mott transition
• Staggered Pseudo Magnetic Field in Twisted Transition Metal Dichalcogenides: Physical Origin and Experimental Consequences
• Quantum Melting of Generalized Wigner Crystals in Transition Metal Dichalcogenide Moiré Systems
• Doping a Mott insulator with excitons in moiré bilayer: fractional superfluid, neutral Fermi surface and Mott transition
• Competing Generalized Wigner Crystal States in Moiré Heterostructures
• Pomeranchuk Effect and Tunable Quantum Phase Transitions in 3L-MoTe2/WSe2
• Exciton interacting with a moiré lattice: Polarons, strings, and optical probing of spin correlations
• Continuous Wigner-Mott transition at $\nu =1/5$
• Origin and stability of generalized Wigner crystallinity in triangular moiré systems
• Signatures of superconducting pairing driven by electron-electron interactions in moiré WSe${}_2$/WSe${}_2$ homobilayer modelled by Hubbard Hamiltonian
• Temperature dependent resistivity in the doped two dimensional metallic phase of mTMD bilayers
• Non-local interactions and supersolidity of moiré excitons