Disorder-dominated quantum criticality in moiré bilayers

Abstract

Moiré bilayer materials have recently attracted much attention following the discovery of various correlated insulating states at specific band fillings. Here we discuss the metal-insulator transitions (MITs) that have been observed in the same devices, but at fillings far from the strongly correlated regime dominated by Mott-like physics, displaying many similarities to other examples of disorder-dominated MITs. We propose a minimal theoretical model describing the interplay of interactions and disorder, which able to capture most experimental trends observed on several devices.

References in corpus (9)

• Controlling electron-phonon interactions in graphene at ultra high carrier densities
• Abundance of correlated insulating states at fractional fillings of WSe${}_2$/WS${}_2$ moiré superlattices
• Continuous Mott transition in semiconductor moiré superlattices
• Sachdev-Ye-Kitaev Models and Beyond: A Window into Non-Fermi Liquids
• Quantum critical behavior in magic-angle twisted bilayer graphene
• Towards the hidden symmetry in Coulomb interacting twisted bilayer graphene: renormalization group approach
• Coulomb Correlations and the Wigner-Mott Transition
• Molecular Quantum Materials: Electronic Phases and Charge Dynamics in Two-Dimensional Organic Solids
• New mechanism and exact theory of superconductivity from strong repulsive interaction

Cited by in corpus (6)

• Magnetism and Quantum Melting in Moiré-Material Wigner Crystals
• Metal-insulator transition in transition metal dichalcogenide heterobilayer: accurate treatment of interaction
• Continuous Mott transition in moiré semiconductors: role of long-wavelength inhomogeneities
• Universal scaling near band-tuned metal-insulator phase transitions
• Continuous Wigner-Mott transition at $\nu =1/5$
• Universal transport at Lifshitz metal-insulator transitions in two dimensions