Two-dimensional Kagome Materials: Theoretical Insights, Experimental Realizations, and Electronic Structures

Abstract

In recent years, kagome materials have attracted significant attention due to their rich emergent phenomena arising from the quantum interplay of geometry, topology, spin, and correlations. However, in the search for kagome materials, it has been found that bulk compounds with electronic properties related to the kagome lattice are relatively scarce, primarily due to the hybridization of kagome layers with adjacent layers. Therefore, researchers have shown increasing interest in the discovery and construction of two-dimensional (2D) kagome materials, aiming to achieve clean kagome bands near the Fermi level in monolayer or few-layer systems. Substantial advancements have already been made in this area. In this review, we summarize the current progress in the construction and development of 2D kagome materials. We begin by introducing the geometric and electronic structures of the kagome lattice model and its variants, followed by discussions on the experimental realizations and electronic structure characterizations of 2D kagome materials. Finally, we provide an outlook on the future developments of 2D kagome materials.

56 pages, 12 figures

References in corpus (86)

• Magic-angle graphene superlattices: a new platform for unconventional superconductivity
• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• Correlated Insulator Behaviour at Half-Filling in Magic Angle Graphene Superlattices
• Moire bands in twisted double-layer graphene
• Grains and grain boundaries in highly crystalline monolayer molybdenum disulfide
• Vapor Phase Growth and Grain Boundary Structure of Molybdenum Disulfide Atomic Layers
• Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene
• Intrinsic quantized anomalous Hall effect in a moiré heterostructure
• Moiré Excitons in Van der Waals Heterostructures
• Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
• Spin Liquid Ground State of the $S=1/2$ Kagome Heisenberg Model
• Signatures of moiré-trapped valley excitons in MoSe${}_2$/WSe${}_2$ heterobilayers
• Two-dimensional transition metal dichalcogenides under electron irradiation: defect production and doping
• Observation of Moiré Excitons in WSe2/WS2 Heterostructure Superlattices
• Optical detection of Mott and generalized Wigner crystal states in WSe2/WS2 moiré superlattices
• CsV${}_3$Sb${}_5$: a ${\mathbb{Z}}_2$ topological kagome metal with a superconducting ground state
• Magnetic Weyl Semimetal Phase in a Kagome Crystal
• Atomic and electronic reconstruction at van der Waals interface in twisted bilayer graphene
• Van der Waals metal-semiconductor junction: weak Fermi level pinning enables effective tuning of Schottky barrier
• Fermi-arc diversity on surface terminations of the magnetic Weyl semimetal Co3Sn2S2
• Large intrinsic anomalous Hall effect in half-metallic ferromagnet Co3Sn2S2 with magnetic Weyl fermions
• Roton pair density wave and unconventional strong-coupling superconductivity in a topological kagome metal
• Abundance of correlated insulating states at fractional fillings of WSe${}_2$/WS${}_2$ moiré superlattices
• Quantum anomalous Hall effect from intertwined moiré bands
• Flat bands and Wigner crystallization in the honeycomb optical lattice
• Topological kagome magnets and superconductors
• Mapping the twist angle and unconventional Landau levels in magic angle graphene
• Unusual competition of superconductivity and charge-density-wave state in a compressed topological kagome metal
• Correlated Insulating States at Fractional Fillings of the WS2/WSe2 Moiré Lattice
• Atomic reconstruction and moiré patterns in transition metal dichalcogenide van der Waals heterostructures
• Intrinsic Quantum Anomalous Hall Effect in the Kagome Lattice Cs2LiMn3F12
• Observation of charge density wave order in 1D mirror twin boundaries of single-layer MoSe2
• Rich Nature of Van Hove Singularities in Kagome Superconductor CsV${}_3$Sb${}_5$
• 17O NMR study of the intrinsic magnetic susceptibility and spin dynamics of the quantum kagome antiferromagnet ZnCu3(OH)6Cl2
• Synthesis of a mesoscale ordered 2D-conjugated polymer with semiconducting properties
• Robust zero-energy modes in an electronic higher-order topological insulator: the dimerized Kagome lattice
• Designing Flat Band by Strain
• Three-state nematicity and magneto-optical Kerr effect in the charge density waves in kagome superconductors
• Dense network of one-dimensional mid-gap metallic modes in monolayer MoSe2 and their spatial undulations
• Imaging orbital ferromagnetism in a moiré Chern insulator
• $\Gamma$-Valley Transition-Metal-Dichalcogenide Moirè Bands
• Quantum states and intertwining phases in kagome materials
• Doped Twisted Bilayer Graphene near Magic Angles: Proximity to Wigner Crystallization not Mott Insulation
• A kilobyte rewritable atomic memory
• Orbital analogue of quantum anomalous Hall effect in $p$-band systems
• Quantum Hall Effect, Screening and Layer-Polarized Insulating States in Twisted Bilayer Graphene
• Macroscopic self-reorientation of interacting two-dimensional crystals
• Superconducting Two-Dimensional Metal-Organic Framework
• A Microscopic Perspective on Moiré Materials
• The honeycomb lattice with multi-orbital structure: topological and quantum anomalous Hall insulators with large gaps
• Flat-Bands-Enabled Triplet Excitonic Insulator in a Di-atomic Kagome Lattice
• Strongly correlated superconductivity in a copper-based metal-organic framework with a perfect kagome lattice
• Designing Kitaev spin liquids in metal-organic frameworks
• Double-dome superconductivity under pressure in the V-based Kagome metals AV3Sb5 (A = Rb and K)
• Proposed realization of itinerant ferromagnetism in optical lattices
• Line and Point Defects in MoSe2 Bilayer Studied by Scanning Tunneling Microscopy and Spectroscopy
• Topological Quantum Materials with Kagome Lattice
• Ferromagnetism and Wigner crystallization in Kagome graphene and related structures
• Competing charge-density wave instabilities in the kagome metal ScV${}_6$Sn${}_6$
• Screening 2D materials with topological flat bands
• Engineering interfacial quantum states and electronic landscapes by molecular nanoarchitectures
• Inversion Domain Boundary Induced Stacking and Bandstructure Diversity in Bilayer MoSe2
• Nanoscale Conductivity Imaging of Correlated Electronic States in WSe2/WS2 Moiré Superlattices
• Manifestation of strongly correlated electrons in a 2D kagome metal-organic framework
• A Two-Dimensional Metal-Organic Framework on Superconducting NbSe${}_2$
• Ultra-Strong Spin-Orbit Coupling and Topological Moiré Engineering in Twisted ZrS2 Bilayers
• Mottness in two-dimensional van der Waals Nb${}_3$X${}_8$ monolayers (X=Cl, Br, and I)
• Electronic Janus lattice and kagome-like bands in coloring-triangular MoTe2 monolayers
• Relaxation effects in twisted bilayer molybdenum disulfide: structure, stability, and electronic properties
• Correlation-induced magnetism in substrate-supported 2D metal-organic frameworks
• Tunable Sample-wide Electronic Kagome Lattice in Low-angle Twisted Bilayer Graphene
• Local gate control of Mott metal-insulator transition in a 2D metal-organic framework
• $F$-wave pairing of cold atoms in optical lattices
• Monolayer Kagome Metals AV${}_3$Sb${}_5$
• Discovery and construction of surface kagome electronic states induced by p-d electronic hybridization
• Excited quantum Hall effect: enantiomorphic flat bands in a Yin-Yang Kagome lattice
• Hidden Breathing Kagome Topology in Hexagonal Transition Metal Dichalcogenides
• Combined minivalley and layer control in twisted double bilayer graphene
• Room-temperature ferromagnetism in epitaxial bilayer FeSb/SrTiO3(001) terminated with a Kagome lattice
• Magnetic moment preservation and emergent Kondo resonance of Co-phthalocyanine on semimetallic Sb(111)
• Twistronics of Kekulé Graphene: Honeycomb and Kagome Flat Bands
• Chemical Rules for Stacked Kagome and Honeycomb Topological Semimetals
• Evidence for Two-dimensional Weyl Fermions in Air-Stable Monolayer PtTe${}_{1.75}$
• Topological transitions by magnetization rotation in kagome monolayers of ferromagnetic Weyl semimetal Co-based shandite
• High-Throughput Discovery of Kagome Materials in Transition Metal Oxide Monolayers
• Quantum dots on the InAs(110) cleavage surface created by atom manipulation

Cited by in corpus (2)

• High-Throughput Discovery of Kagome Materials in Transition Metal Oxide Monolayers
• Nature of magnetic exchange interactions in kagome antiferromagnets FeGe and FeSn