Pseudogap metal and magnetization plateau from doping moiré Mott insulator

Abstract

The problem of doping Mott insulators is of fundamental importance and long-standing interest in the study of strongly correlated electron systems. The advent of semiconductor based moiré materials opens a new ground for simulating the Hubbard model on the triangular lattice and exploring the rich phase diagram of doped Mott insulators as a function of doping and external magnetic field. Based on our recent identification of spin polaron quasiparticle in Mott insulator, in this work we predict a new metallic state emerges at small doping and intermediate field range, a pseudogap metal that exhibits a single-particle gap and a doping-dependent magnetization plateau.

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Cited by in corpus (9)

• Itinerant spin polaron and metallic ferromagnetism in semiconductor moiré superlattices
• Hofstadter states and reentrant charge order in a semiconductor moiré lattice
• Strong-coupling phases of trions and excitons in electron-hole bilayers at commensurate densities
• Solving and visualizing fractional quantum Hall wavefunctions with neural network
• Kinetic magnetism in the crossover between the square and triangular lattice Fermi-Hubbard models
• Magnonic Superconductivity
• Instability of Nagaoka State and Quantum Phase Transition via Kinetic Frustration Control
• Exploring kinetically induced bound states in triangular lattices with ultracold atoms: spectroscopic approach
• Magnetism from multiparticle ring exchange in moiré Wigner crystals