Two-Dimensional Oxide Topological Insulator With Iron-Pnictide Superconductor LiFeAs Structure

Abstract

By using first-principles calculations, we propose that ZrSiO can be looked as a three-dimensional (3D) oxide weak topological insulator (TI) and its single layer is a long-sought-after 2D oxide TI with a band gap up to 30 meV. Calculated phonon spectrum of the single layer ZrSiO indicates it is dynamically stable and the experimental achievements in growing oxides with atomic precision ensure that it can be readily synthesized. This will lead to novel devices based on TIs, the so called "topotronic" devices, operating under room-temperature and stable when exposed in the air. Thus, a new field of "topotronics" will arise. Another intriguing thing is this oxide 2D TI has the similar crystal structure as the well-known iron-pnictide superconductor LiFeAs. This brings great promise in realizing the combination of superconductor and TI, paving the way to various extraordinary quantum phenomena, such as topological superconductor and Majorana modes. We further find that there are many other isostructural compounds hosting the similar electronic structure and forming a $WHM$-family with $W$ being Zr, Hf or La, $H$ being group IV or group V element, and $M$ being group VI one.

adding results of phonon spectrum, supported substrate and binding energy. Related with our recent preprints for 2D TIs: arXiv:1507.01172, arXiv:1503.09040 and arXiv:1508.05220

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Cited by in corpus (100)

• Topological quantum chemistry
• Dirac Cone Protected by Non-Symmorphic Symmetry and 3D Dirac Line Node in ZrSiS
• Topological nodal-line fermions in ZrSiSe and ZrSiTe
• High-throughput calculations of magnetic topological materials
• Observation of Topological Nodal Fermion Semimetal Phase in ZrSiS
• Large nonsaturating magnetoresistance and signature of non-degenerate Dirac nodes in ZrSiS
• Electronic Transport and quantum oscillation of Topological Semimetals
• Chemical Principles of Topological Semimetals
• Symmetry Demanded Topological Nodal-line Materials
• Unexpected Dirac-Node Arc in the Topological Line-Node Semimetal HfSiS
• Dirac Line-nodes and Effect of Spin-orbit Coupling in Non-symmorphic Critical Semimetal MSiS (M=Hf, Zr)
• Unconventional mass enhancement around the Dirac nodal loop in ZrSiS
• Compensated semimetal LaSb with unsaturated magnetoresistance
• Tunable Weyl and Dirac states in the nonsymmorphic compound $\mathbf{CeSbTe}$
• Nearly massless Dirac fermions and strong Zeeman splitting in the nodal-line semimetal ZrSiS probed by de Haas--van Alphen quantum oscillations
• Tunability of the topological nodal-line semimetal phase in ZrSiX-type materials
• Experimental evidence of large-gap two-dimensional topological insulator on the surface of ZrTe5
• Topological Semimetals in Square-Net Materials
• Valley-Layer Coupling: A New Design Principle for Valleytronics
• Non-symmorphic band degeneracy at the Fermi level in ZrSiTe
• Extremely large and significantly anisotropic magnetoresistance in ZrSiS single crystals
• Observation of Dirac-like energy band and ring-torus Fermi surface associated with the nodal line in topological insulator CaAgAs
• Two-Dimensional Dirac Fermions Protected by Space-Time Inversion Symmetry in Black Phosphorus
• Observation of topological nodal-line fermionic phase in GdSbTe
• Flat optical conductivity in ZrSiS due to two-dimensional Dirac bands
• Nearly massless Dirac fermions hosted by Sb square net in BaMnSb2
• Thermoelectric quantum oscillations in ZrSiS
• Emergence of topological bands on the surface of ZrSnTe crystal
• Two-dimensional Spin-Orbit Dirac Point in Monolayer HfGeTe
• Magnetotransport properties and evidence of topological insulating state in LaSbTe
• Band splitting and Weyl nodes in trigonal tellurium studied by angle-resolved photoemission spectroscopy and density functional theory
• Quantum oscillation studies of topological semimetal candidate ZrGeM (M=S, Se, Te)
• Quantum Oscillations and Coherent Interlayer Transport in a New Topological Dirac Semimetal Candidate: YbMnSb${}_2$
• Unusual magneto-transport from Si-square nets in topological semimetal HfSiS
• Surface floating 2D bands in layered nonsymmorphic semimetals: ZrSiS and related compounds
• Topological phases in the TaSe3 compound
• Temperature-Induced Lifshitz Transition and Possible Excitonic Instability in ZrSiSe
• A systematic study of stacked square nets: from Dirac fermions to material realizations
• High Surface Conductivity of Fermi Arc Electrons in Weyl semimetals
• Observation of band crossings protected by nonsymmorphic symmetry in the layered ternary telluride Ta3SiTe6
• Magnetic and electronic properties of a topological nodal line semimetal candidate: HoSbTe
• Two-dimensional topological materials discovery by symmetry-indicator method
• Topological electronic structure in the antiferromagnet HoSbTe
• Electronic and Magnetic Properties of Topological Semimetal Candidate NdSbTe
• Probing lattice dynamics and electron-phonon coupling in topological nodal-line semimetal ZrSiS
• Electronic Transport Evidence for Topological Nodal-Line Semimetals of ZrGeSe single crystals
• Highly anisotropic interlayer magnetoresistance in ZrSiS nodal-line Dirac semimetal
• Observation of Open-Orbit Fermi Surface Topology in Extremely Large Magnetoresistance Semimetal MoAs${}_2$
• Observation of Effective Pseudospin Scattering in ZrSiS
• Possible devil's staircase in the Kondo lattice CeSbSe
• Classifying topology in photonic heterostructures with gapless environments
• Revealing Topology in Metals using Experimental Protocols Inspired by $K$-Theory
• Quantum oscillation evidence of topological semimetal phase in ZrSnTe
• Possible pressure-induced topological quantum phase transition in the nodal line semimetal ZrSiS
• Experimental evidence of crystal symmetry protection for the topological nodal line semimetal state in ZrSiS
• Non-trivial topology in a layered Dirac nodal-line semimetal candidate SrZnSb${}_2$ with distorted Sb square nets
• Multiple Symmetry-Protected Dirac Nodal Lines in A Quasi-One-Dimensional Semimetal
• Magnetic Topological Semimetal Phase with Electronic Correlation Enhancement in SmSbTe
• Indications for Lifshitz transitions in the nodal-line semimetal ZrSiTe induced by interlayer interaction
• Evidence for bulk nodal loops and universality of Dirac-node arc surface states in ZrGeXc (Xc = S, Se, Te)
• A diagnosis scheme for topological degeneracies at high-symmetry momenta
• Excitonic instability and unconventional pairing in the nodal-line materials ZrSiS and ZrSiSe
• Signature of weakly coupled $f$ electrons and conduction electrons in magnetic Weyl semimetal candidates PrAlSi and SmAlSi
• Origin of the butterfly magnetoresistance in a Dirac nodal-line system
• Tip-induced Superconductivity Coexisting with Preserved Topological Properties in Line-nodal Semimetal ZrSiS
• Infrared spectroscopy study of the nodal-line semimetal candidate ZrSiTe under pressure: Hints for pressure-induced phase transitions
• Observation of Dirac state in half-Heusler material YPtBi
• Spectroscopic Evidence for Dirac Nodal Surfaces and Nodal Rings in Superconductor NaAlSi
• Evolution of Electronic and Magnetic Properties in Topological Semimetal SmSbxTe2-x
• Evolution of Magnetism in Magnetic Topological Semimetal NdSb${}_x$Te${}_{2-x+\delta }$
• Physical properties of KMgBi single crystals
• Evidence of topological edge states in a superconducting nonsymmorphic nodal-line semimetal
• Quantum oscillations of the magnetic torque in the nodal-line Dirac semimetal ZrSiS
• Symmetry-selective quasiparticle scattering and electric field tunability of the ZrSiS surface electronic structure
• Twisted nodal wires and three-dimensional quantum spin Hall effect in distorted square-net compounds
• Robust Dirac lines against Ge vacancy and possible spin-orbit Dirac points in nonsymmorphic HfGe0.92Te
• Quantum transport in a compensated semimetal W2As3 with nontrivial Z2 indices
• An efficient method for hybrid density functional calculation with spin-orbit coupling
• Experimental observations indicating the topological nature of the edge states on HfTe5
• Signature of an Ultrafast Photo-Induced Lifshitz Transition in the Nodal-Line Semimetal ZrSiTe
• Visualization of electronic topology in ZrSiSe by scanning tunneling microscopy
• Insulator-to-Metal Transition and Isotropic Gigantic Magnetoresistance in Layered Magnetic Semiconductors
• Valley and spin splittings in a valley-layer-locked monolayer via atomic adsorption
• Electronic structure and open-orbit Fermi surface topology in isostructural semimetals NbAs${}_2$ and W${}_2$As${}_3$ with extremely large magnetoresistance
• Revealing a charge-density-wave gap in the predicted weak topological insulator HoSbTe
• Unified low-energy effective Hamiltonian and the band topology of $p$-block square-net layer derivatives
• Evidence for electronic signature of magnetic transition in topological magnet HoSbTe
• Converting topological insulators into topological metals within the tetradymite family
• Existence of dual topological phases in Sn-based ternary chalcogenides
• Fermiology of a topological line-nodal compound CaSb2 and its implication to superconductivity: angle-resolved photoemission study
• Observation of Landau quantization and standing waves in HfSiS
• Large Negative Magnetoresistance in off-Stochiometric Topological Material PrSbTe
• Shubnikov-de Haas and de Haas-van Alphen oscillations in topological semimetal CaAl4
• Projective Quasiparticle Interference of a Single Scatterer to Analyze the Electronic Band Structure of ZrSiS
• Electronic structures and stability investigation of the new class of large band gap topological insulators MTl${}_4$Te${}_3$ (M = Cd, Hg)
• Chalcogen Doping Effect on the Insulator-to-Metal Transition in GdPS
• Evolution of Magnetoresistance in the magnetic topological semimetals NdSbxTe2-x
• Quantum oscillation and unusual protection mechanism of the surface state in nonsymmorphic semimetals
• Nodal-line driven anomalous susceptibility in ZrSiS
• Magnetoresistance in ZrSi$X$ ($X=$ S, Se, Te) nodal-line semimetals