Emergence of Topological Nodal Lines and Type II Weyl Nodes in Strong Spin--Orbit Coupling System InNbX2(X=S,Se)

Abstract

Using first--principles density functional calculations, we systematically investigate electronic structures and topological properties of InNbX2 (X=S, Se). In the absence of spin--orbit coupling (SOC), both compounds show nodal lines protected by mirror symmetry. Including SOC, the Dirac rings in InNbS2 split into two Weyl rings. This unique property is distinguished from other dicovered nodal line materials which normally requires the absence of SOC. On the other hand, SOC breaks the nodal lines in InNbSe2 and the compound becomes a type II Weyl semimetal with 12 Weyl points in the Brillouin Zone. Using a supercell slab calculation we study the dispersion of Fermi arcs surface states in InNbSe2, we also utilize a coherent potential approximation to probe their tolernace to the surface disorder effects. The quasi two--dimensionality and the absence of toxic elements makes these two compounds an ideal experimental platform for investigating novel properties of topological semimetals.

References in corpus (46)

• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
• Type-II Weyl Semimetals
• Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)
• Dirac semimetal in three dimensions
• Experimental discovery of Weyl semimetal TaAs
• Topological nodal semimetals
• Three Dimensional Dirac Semimetal and Quantum Transports in Cd3As2
• Theoretical Discovery/Prediction: Weyl Semimetal states in the TaAs material (TaAs, NbAs, NbP, TaP) class
• Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
• Weyl semimetal phase in non-centrosymmetric transition metal monophosphides
• Chern Numbers in Discretized Brillouin Zone: Efficient Method of Computing (Spin) Hall Conductances
• Chiral Anomaly and Classical Negative Magnetoresistance of Weyl Metals
• Extremely large magnetoresistance and ultrahigh mobility in the topological Weyl semimetal NbP
• Observation of Weyl nodes in TaAs
• Discovery of a Weyl Fermion semimetal state in NbAs
• Topological nodal line semimetals with and without spin-orbital coupling
• Classification of stable three-dimensional Dirac semimetals with nontrivial topology
• Quantum Hall effects in a Weyl Semi-Metal: possible application in pyrochlore Iridates
• Dirac Line Nodes in Inversion Symmetric Crystals
• Topological Nodal Line Semimetal and Dirac Semimetal State in Antiperovskite Cu${}_3$PdN
• Topological Node-Line Semimetal in Three Dimensional Graphene Networks
• Linear-response theory and lattice dynamics: a muffin-tin orbital approach
• Quantum Oscillations from Surface Fermi-Arcs in Weyl and Dirac Semi-Metals
• High-temperature surface superconductivity in topological flat-band systems
• Spectroscopic evidence for type II Weyl semimetal state in MoTe2
• Topological semi-metals with line nodes and drumhead surface states
• Potential ring of Dirac nodes in a new polymorph of Ca${}_3$P${}_2$
• Drumhead Surface States and Topological Nodal-Line Fermions in TlTaSe2
• Observation of Weyl nodes and Fermi arcs in TaP
• Line of Dirac Nodes in Hyper-Honeycomb Lattices
• 3D Dirac semimetals: current materials, design principles and predictions of new materials
• Adler-Bell-Jackiw anomaly in Weyl semi-metals: Application to Pyrochlore Iridates
• Topological Nodal Line Semimetals in CaP3 family of materials
• Topological nodal-line semimetals in alkaline-earth stannides, germanides and silicides
• Magnetic breakdown and Klein tunneling in a type-II Weyl semimetal
• Robust Type-II Weyl Semimetal Phase in Transition Metal Diphosphides XP${}_2$ (X = Mo, W)
• Computational Design of Axion Insulators Based on 5d Spinels Compounds
• CaTe: a new topological node-line and Dirac semimetal
• Topological semimetals and topological insulators in rare earth monopnictides
• Observation of Fermi Arcs in non-Centrosymmetric Weyl Semi-metal Candidate NbP
• Classification of stable Dirac and Weyl semimetals with reflection and rotational symmetry
• Dirac and Weyl Semimetal in XYBi (X=Ba, Eu; Y=Cu, Ag and Au)
• Topological Insulator to Dirac Semimetal Transition Driven by Sign Change of Spin-Orbit Coupling in Thallium Nitride
• Discovery of Lorentz-violating Weyl fermion semimetal state in LaAlGe materials
• Chiral two-dimensional electron gas in a periodic magnetic field

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• Anisotropic superconductivity in topological crystalline metal Pb${}_{1/3}$TaS${}_2$ with multiple Dirac fermions
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• Turning Copper Metal into Weyl Semimetal
• Strong electron-phonon coupling in 3D tungsten nitride and coexistence of intrinsic superconductivity and topological nodal line in its 2D limit
• Delocalization of topological surface states by diagonal disorder in nodal loop semimetals
• Phase diagram of a magnetic topological nodal semimetal: Stable nodal line in an easy-plane ferromagnet
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• Fragile topology in nodal-line semimetal superconductors
• TopologicalNumbers.jl: A Julia package for topological number computation