Kinetic Magnetism in Triangular Moiré Materials

Abstract

Magnetic properties of materials ranging from conventional ferromagnetic metals to strongly correlated materials such as cuprates originate from Coulomb exchange interactions. The existence of alternate mechanisms for magnetism that could naturally facilitate electrical control have been discussed theoretically but an experimental demonstration in an extended system has been missing. Here, we investigate MoSe${}_2$/WS${}_2$ van der Waals heterostructures in the vicinity of Mott insulator states of electrons forming a frustrated triangular lattice and observe direct evidence for magnetic correlations originating from a kinetic mechanism. By directly measuring electronic magnetization through the strength of the polarization-selective attractive polaron resonance, we find that when the Mott state is electron doped the system exhibits ferromagnetic correlations in agreement with the Nagaoka mechanism.

10 pages, 8 figures

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Cited by in corpus (54)

• Observation of Nagaoka Polarons in a Fermi-Hubbard Quantum Simulator
• Directly imaging spin polarons in a kinetically frustrated Hubbard system
• Interplay between topology and correlations in the second moiré band of twisted bilayer MoTe2
• Chiral Pseudo Spin Liquids in Moire Heterostructures
• Optical read and write of spin states in organic diradicals
• Strong-coupling phases of trions and excitons in electron-hole bilayers at commensurate densities
• Moire magnetism in CrBr3 multilayers emerging from differential strain
• Confined Trions and Mott-Wigner States in a Purely Electrostatic Moiré Potential
• Probing magnetism in moiré heterostructures with quantum twisting microscopes
• Quantum Melting of Generalized Wigner Crystals in Transition Metal Dichalcogenide Moiré Systems
• Polaron spectroscopy of interacting Fermi systems: insights from exact diagonalization
• Engineering robust strain transmission in van der Waals heterostructure devices
• Spin-polarons and ferromagnetism in doped dilute Wigner-Mott insulators
• A resonant valence bond spin liquid in the dilute limit of doped frustrated Mott insulators
• Chiral polaron formation on the edge of topological quantum matter
• Superradiance of Strongly Interacting Dipolar Excitons in Moiré Quantum Materials
• Optical signatures of interlayer electron coherence in a bilayer semiconductor
• Hybrid moiré excitons and trions in twisted MoTe${}_2$-MoSe${}_2$ heterobilayers
• Single-hole spectra of Kitaev spin liquids: from dynamical Nagaoka ferromagnetism to spin-hole fractionalization
• Kinetomagnetism of chirality and its applications
• Electromagnetic field assisted exciton diffusion in moiré superlattices
• Tunable exciton valley-pseudospin orders in moiré Bose-Hubbard model
• Collective optical properties of moiré excitons
• Exciton interacting with a moiré lattice: Polarons, strings, and optical probing of spin correlations
• Ferromagnetic semimetal and charge-density wave phases of interacting electrons in a honeycomb moiré potential
• Finite-Temperature Kinetic Ferromagnetism in the Square Lattice Hubbard Model
• Kinetic Ferromagnetism and Topological Magnons of the Hole-Doped Kitaev Spin Liquid
• Kinetic magnetism in the crossover between the square and triangular lattice Fermi-Hubbard models
• Itinerant ferromagnetism in transition metal dichalcogenides moiré superlattices
• Observation of Magnon-Polarons in the Fermi-Hubbard Model
• Instability of Nagaoka State and Quantum Phase Transition via Kinetic Frustration Control
• Particle-Hole Asymmetry and Pinball Liquid in a Triangular-Lattice Extended Hubbard Model within Mean-Field Approximation
• Magnetism of the Bilayer Wigner Crystal
• AC-Stark Spectroscopy of Interactions between Moiré Excitons and Polarons
• Wideband covariance magnetometry below the diffraction limit
• Many-body phases from effective geometrical frustration and long-range interactions in a subwavelength lattice
• Purely electronic model for exciton-polaron formation in moiré heterostructures
• Searching for superconductivity in doped triangular lattice Kitaev magnets
• Candidate for a Fractional Topological Insulator in Twisted MoTe2
• Probing Quantum Anomalous Hall States in Twisted Bilayer WSe2 via Attractive Polaron Spectroscopy
• Intersubband electric dipole spin resonance in transition metal dichalcogenide heterobilayers
• Optimal array geometries for kinetic magnetism and Nagaoka polarons
• Geometric Frustration Assisted Kinetic Ferromagnetism in Doped Mott Insulators
• Magnetism from multiparticle ring exchange in moiré Wigner crystals
• Cavity-Driven Attractive Interactions in Quantum Materials
• Exploring kinetically induced bound states in triangular lattices with ultracold atoms: spectroscopic approach
• Doping-induced Quantum Anomalous Hall Crystals and Topological Domain Walls
• Insulating charge transfer ferromagnetism
• Itinerant magnetism in Hubbard models with long-range interactions
• Itinerant magnetism in the triangular lattice Hubbard model at half-doping: Application to twisted transition-metal dichalcogenides
• Spin-spiral instability of the Nagaoka ferromagnet in the crossover between square and triangular lattices
• Probing spatially resolved spin density correlations with trapped excitons
• Electronic phonon-induced magnetism in moiré Mott-Wigner crystals
• Stripe antiferromagnetism and chiral superconductivity in tWSe${}_2$