Type-II Dirac line node in strained Na3N
arXiv:1807.08523 · doi:10.1103/PhysRevMaterials.2.104203
Abstract
Dirac line node (DLN) semimetals are a class of topological semimetals that feature band-crossing lines in momentum space. We study the type-I and type-II classification of DLN semimetals by developing a criterion that determines the type using band velocities. Using first-principles calculations, we also predict that Na3N under an epitaxial tensile strain realizes a type-II DLN semimetal with vanishing spin-orbit coupling (SOC), characterized by the Berry phase that is Z2-quantized in the presence of inversion and time-reversal symmetries. The surface energy spectrum is calculated to demonstrate the topological phase, and the type-II nature is demonstrated by calculating the band velocities. We also develop a tight-binding model and a low-energy effective Hamiltonian that describe the low-energy electronic structure of strained Na3N. The occurrence of a DLN in Na3N under strain is captured in the optical conductivity, which we propose as a means to experimentally confirm the type-II class of the DLN semimetal.
arXiv comment14 pages, 9 figure
References in corpus (70)
- Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
- Maximally-localized generalized Wannier functions for composite energy bands
- Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
- Wannier90: A Tool for Obtaining Maximally-Localised Wannier Functions
- Maximally localized Wannier functions: Theory and applications
- Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
- Classification of topological quantum matter with symmetries
- Type-II Weyl Semimetals
- Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi
- Maximally-localized Wannier functions for entangled energy bands
- 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
- Negative magnetoresistance without well-defined chirality in the Weyl semimetal TaP
- Beyond Dirac and Weyl fermions: Unconventional quasiparticles in conventional crystals
- Experimental Realization of a Three-Dimensional Dirac Semimetal
- Discovery of a Weyl Fermion semimetal state in NbAs
- Topological nodal line semimetals with and without spin-orbital coupling
- 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 CuPdN
- Experimental observation of topological Fermi arcs in type-II Weyl semimetal MoTe2
- Topological Node-Line Semimetal in Three Dimensional Graphene Networks
- Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl Fermion semimetal
- Topological nodal line semimetals
- Multi-Weyl Topological Semimetals Stabilized by Point Group Symmetry
- Quantum transport evidence for a three-dimensional Dirac semimetal phase in Cd3As2
- Topological Phase Transition and Texture Inversion in a Tunable Topological Insulator
- Lorentz-violating type-II Dirac fermions in transition metal dichalcogenide PtTe
- Negative Magnetoresistance in Dirac Semimetal Cd3As2
- MoTe2: A Type-II Weyl Topological Metal
- A new type of Weyl semimetal with quadratic double Weyl fermions in SrSi2
- Topological Semimetals Predicted from First-principles Calculations
- Weyl Semimetals, Fermi Arcs and Chiral Anomalies (A Short Review)
- Spin-orbit-free Weyl-loop and Weyl-point semimetals in a stable three-dimensional carbon allotrope
- Double Dirac Semimetals in Three Dimensions
- Potential ring of Dirac nodes in a new polymorph of CaP
- Observation of Weyl nodes and Fermi arcs in TaP
- Triple Point Topological Metals
- Experimental Realization of Type-II Dirac Fermions in PdTe Superconductor
- Type-II Dirac fermions in the PtSe class of transition metal dichalcogenides
- Predicted Unusual Magnetoresponse in Type-II Weyl Semimetals
- Topological Nodal Line Semimetals in CaP3 family of materials
- Experimental evidence of type-II Dirac fermions in PtSe2
- Topological nodal-line semimetals in alkaline-earth stannides, germanides and silicides
- The nature of the electronic band gap in lanthanide oxides
- Nontrivial Berry phase and type II Dirac transport in layered material PdTe2
- Type-II nodal loops: theory and material realization
- Dirac node lines in pure alkali earth metals
- Magnetic breakdown and Klein tunneling in a type-II Weyl semimetal
- Co-existence of Weyl Fermion and Massless Triply Degenerate Nodal Points
- Robust Type-II Weyl Semimetal Phase in Transition Metal Diphosphides XP (X = Mo, W)
- Magnetic-field-induced relativistic properties in type-I and type-II Weyl semimetals
- Topological Dirac Nodal Lines and Surface Charges in fcc Alkaline Earth Metals
- Topological electronic structure and Weyl semimetal in the TlBiSe class of semiconductors
- Topological Node-Line Semimetal in Compressed Black Phosphorus
- CaTe: a new topological node-line and Dirac semimetal
- Two-Dimensional Node-Line Semimetals in a Honeycomb-Kagome Lattice
- Floquet Weyl semimetals in light-irradiated type-II and hybrid line-node semimetals
- Electrodynamics on Fermi Cyclides in Nodal Line Semimetals
- Loop-nodal and Point-nodal Semimetals in Three-dimensional Honeycomb Lattices
- Type-II Dirac semimetals in the YPdSn class
- Modern theory of magnetic breakdown
- BaSn: A new, wide-gap, strong topological insulator
- Pressure-induced Topological Node-Line Semimetals in Alkaline-Earth Hexaborides XB6 (X=Ca, Sr, Ba)