Organic Topological Insulators in Organometallic Lattices

Abstract

Topological insulators (TIs) are a recently discovered class of materials having insulating bulk electronic states but conducting boundary states distinguished by nontrivial topology. So far, several generations of TIs have been theoretically predicted and experimentally confirmed, all based on inorganic materials. Here, based on first-principles calculations, we predict a family of two-dimensional organic TIs made of organometallic lattices. Designed by assembling molecular building blocks of triphenyl-metal compounds with strong spin-orbit coupling into a hexagonal lattice, this new classes of organic TIs are shown to exhibit nontrivial topological edge states that are robust against significant lattice strain. We envision that organic TIs will greatly broaden the scientific and technological impact of TIs.

17 pages, 3 figures

References in corpus (25)

• Topological Insulators
• Topological insulators and superconductors
• Quantum Spin Hall Effect in Graphene
• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Topological Insulators with Inversion Symmetry
• Wannier90: A Tool for Obtaining Maximally-Localised Wannier Functions
• Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface
• A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
• Quantum Spin Hall Effect in Silicene
• Low-energy effective Hamiltonian involving spin-orbit coupling in Silicene and Two-Dimensional Germanium and Tin
• Intrinsic and Rashba Spin-orbit Interactions in Graphene Sheets
• Tunable Multifunctional Topological Insulators in Ternary Heusler Compounds
• A new platform for topological quantum phenomena : Topological Insulator states in thermoelectric Heusler-related ternary compounds
• Topological Insulator and Helical Zero Mode in Silicene under Inhomogeneous Electric Field
• Quantum Spin Hall Effect and Enhanced Magnetic Response by Spin-Orbit Coupling
• Half-Heusler Compounds as a New Class of Three-Dimensional Topological Insulators
• Stable nontrivial Z2 topology in ultrathin Bi (111) films: a first-principles study
• Angle Dependent Van Hove Singularities in Slightly Twisted Graphene Bilayer
• Observation of Single Dirac Cone Topological Surface State in Compounds TlBiTe2 and TlBiSe2 from a New Topological Insulator Family
• Single-Dirac-Cone topological surface states in TlBiSe2 class of Topological Insulators
• Two-Dimensional Topological Insulator State and Topological Phase Transition in Bilayer Graphene
• Actinide Topological Insulator Materials with Strong Interaction
• Creation of Helical Dirac Fermions by Interfacing Two Gapped Systems of Ordinary Fermions
• Direct Observation of the Topological Surface States in Lead-Based Ternary Telluride Pb(Bi1-xSbx)2Te4

Cited by in corpus (52)

• Colloquium: Topological Band Theory
• Topological Phases in Two-Dimensional Materials: A Brief Review
• The Rare Two-Dimensional Materials with Dirac Cones
• Quantum Anomalous Hall Effect in 2D Organic Topological Insulators
• Flat Chern Band in a Two-Dimensional Organometallic Framework
• Epitaxial growth of large-gap quantum spin Hall insulator on semiconductor surface
• Exotic electronic states in the world of flat bands: from theory to material
• Low-Energy Effective Hamiltonian for Giant-Gap Quantum Spin Hall Insulators in Honeycomb X-Hydride/Halide (X=N-Bi) Monolayers
• Topological states on the breathing kagome lattice
• Two-dimensional band structure in honeycomb metal-organic frameworks
• The honeycomb lattice with multi-orbital structure: topological and quantum anomalous Hall insulators with large gaps
• Room Temperature Quantum Spin Hall Insulators with a Buckled Square Lattice
• Formation of quantum spin Hall state on Si surface and energy gap scaling with strength of spin orbit coupling
• Magnetic edge anisotropy in graphene-like honeycomb crystals
• Competing Magnetic Orderings and Tunable Topological States in Two-Dimensional Hexagonal Organometallic Lattices
• Discovery of Intrinsic Quantum Anomalous Hall Effect in Organic Mn-DCA Lattice
• Engineering interfacial quantum states and electronic landscapes by molecular nanoarchitectures
• Topologically protected excitons in porphyrin thin films
• Edge states in graphene-like systems
• Two-dimensional Dirac Semimetals without Inversion Symmetry
• Tunable Topological States in Electron-Doped HTT-Pt
• Epitaxial Growth of Ultraflat Bismuthene with Large Topological Band Inversion Enabled by Substrate-Orbital-Filtering Effect
• Synthesis and Local Probe Gating of a Monolayer Metal-Organic Framework
• Coupling effect of topological states and Chern insulators in two-dimensional triangular lattices
• Topological states and quantized current in helical molecules
• Spontaneous valley polarization in 2D organometallic lattice
• Tuning the topological states in metal-organic bilayers
• Gallium Bismuth Halides GaBi-X2 (X= I, Br, Cl) Monolayers with Distorted Hexagonal Framework: Novel Room-Temperature Quantum Spin Hall Insulators
• On-surface Assembly of Au-Dicyanoanthracene Coordination Structures on Au(111)
• Stacking-sequence-independent band structure and shear exfoliation of two-dimensional electride materials
• Isolated Flat Bands and Physics of Mixed Dimensions in a 2D Covalent Organic Framework
• Superconductivity in an organometallic compound
• Topological Proximity Effects in Graphene Nanoribbon Heterostructures
• From quantum anomalous Hall phases to topological metals in interacting decorated honeycomb lattices
• Correlation-driven organic 3D topological insulator with relativistic fermions
• Effects of anisotropy in spin molecular-orbital coupling on effective spin models of trinuclear organometallic complexes
• Orbital-Active Dirac Materials from the Symmetry Principle
• Chern insulators and high Curie temperature Dirac half-metal in two-dimensional metal-organic frameworks
• Two-dimensional anisotropic Dirac materials PtN4C2 and Pt2N8C6 with quantum spin and valley Hall effects
• Spin Excitations of High Spin Iron(II) in Metal-Organic Chains on Metal and Superconductor
• RKKY plateau in zero- and one-dimensional triangular Kagome lattice models
• Tailoring topological states in silicene using different halogen-passivated Si(111) substrates
• Engineering two-dimensional kagome topological insulator from porous graphene
• Realization of Kane-Mele Model in $X{\mathbf{N}}_4$-Embedded Graphene ($X$=Pt, Ir, Rh, Os)
• Quantum spin Hall insulators and quantum valley Hall insulators of BiX/SbX (X = H, F, Cl, and Br) monolayers with a record bulk band gap
• Orbital design of topological insulators from two-dimensional semiconductors
• Tunable topological phase in 2D ScV${}_6$Sn${}_6$ kagome material
• Realization of Flat Band with Possible Nontrivial Topology in Electronic Kagome Lattice
• Topological features of hydrogenated graphene
• Designer quantum matter in van der Waals heterostructures
• Electronic and magnetic properties of honeycomb zigzag nanoribbons in the in-plane transverse electric field using Kane-Mele-Hubbard model
• Robust large-gap topological insulator phase in transition-metal chalcogenide ZrTe${}_4$Se