Nodal-chain metals

Abstract

The band theory of solids is arguably the most successful theory of condensed matter physics, providing the description of the electronic energy levels in a variety of materials. Electronic wavefunctions obtained from the band theory allow for a topological characterization of the system and the electronic spectrum may host robust, topologically protected fermionic quasiparticles. Many of these quasiparticles are analogs of the elementary particles of the Standard Model, but others do not have a counterpart in relativistic high-energy theories. A full list of possible quasiparticles in solids is still unknown, even in the non-interacting case. Here, we report on a new type of fermionic excitation that appears in metals. This excitation forms a nodal chain -- a chain of connected loops in momentum space -- along which conduction and valence band touch. We prove that the nodal chain is topologically distinct from any other excitation reported before. We discuss the symmetry requirements for the appearance of this novel excitation and predict that it is realized in an existing material IrF${}_4$, as well as in other compounds of this material class. Using IrF${}_4$ as an example, we provide a detailed discussion of the topological surface states associated with the nodal chain. Furthermore, we argue that the presence of the novel quasiparticles results in anomalous magnetotransport properties, distinct from those of the known materials.

Main text: 6 pages, 4 figures; Supplement: 14 pages, 8 figures, 5 tables

References in corpus (12)

• Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase
• Dirac materials
• Classification of stable three-dimensional Dirac semimetals with nontrivial topology
• Topological Node-Line Semimetal in Three Dimensional Graphene Networks
• Weyl semimetals from noncentrosymmetric topological insulators
• Quasiparticle interference of the Fermi arcs and surface-bulk connectivity of a Weyl semimetal
• Observation of the Adler-Bell-Jackiw chiral anomaly in a Weyl semimetal
• Emergent Weyl spinors in multi-fermion systems
• Signature of the chiral anomaly in a Dirac semimetal: a current plume steered by a magnetic field
• Weyl semimetal from spontaneous inversion symmetry breaking in pyrochlore oxides
• Topological Nodal-Line Fermions in the Non-Centrosymmetric Superconductor Compound PbTaSe2
• Topological Crystalline Metal in Orthorhombic Perovskite Iridates

Cited by in corpus (300)

• Topological Photonics
• WannierTools: An open-source software package for novel topological materials
• The (High Quality) Topological Materials In The World
• Crystal Hall effect in Collinear Antiferromagnets
• Towards ideal topological materials: Comprehensive database searches using symmetry indicators
• Topological nodal line semimetals
• Discovery of topological Weyl fermion lines and drumhead surface states in a room temperature magnet
• Z2Pack: Numerical Implementation of Hybrid Wannier Centers for Identifying Topological Materials
• New topological invariants in non-Hermitian systems
• Topological Non-Hermitian skin effect
• Topological quantum matter with cold atoms
• Nodal-link semimetals
• Band Topology and Linking Structure of Nodal Line Semimetals with Z2 Monopole Charges
• Electronic Transport and quantum oscillation of Topological Semimetals
• Topological Semimetals from first-principles
• Wilson loop approach to fragile topology of split elementary band representations and topological crystalline insulators with time reversal symmetry
• Non-Abelian band topology in noninteracting metals
• Topological Hopf and chain link semimetal states and their application to Co2MnGa (Theory and Materials Prediction)
• Robust doubly charged nodal lines and nodal surfaces in centrosymmetric systems
• Weyl, Dirac and high-fold chiral fermions in topological quantum materials
• Theoretical prediction of magnetic and noncentrosymmetric Weyl fermion semimetal states in the R-Al-X family of compounds (R=rare earth, Al=aluminium, X=Si, Ge)
• Topological semimetals with double-helix nodal link
• Topological Materials Discovery from Crystal Symmetry
• Non-Abelian reciprocal braiding of Weyl points and its manifestation in $\text{ZrTe}$
• Nodal-knot semimetals
• Symmetry Demanded Topological Nodal-line Materials
• Persistent spin texture enforced by symmetry
• Topological Euler class as a dynamical observable in optical lattices
• Experimental discovery of nodal chains
• Dirac nodal lines and induced spin Hall effect in metallic rutile oxides
• Nonsymmorphic-symmetry-protected hourglass Dirac loop, nodal line, and Dirac point in bulk and monolayer $X_3$SiTe${}_6$ ($X=$ Ta, Nb)
• From Nodal Chain Semimetal To Weyl Semimetal in HfC
• Exceptional Links and Twisted Fermi Ribbons in non-Hermitian Systems
• Hourglass Dirac Chain Metal in Rhenium Dioxide
• Quantum Transport in Topological Semimetals under Magnetic Fields
• Geometric approach to fragile topology beyond symmetry indicators
• Prediction of two-dimensional nodal-line semimetal in a carbon nitride covalent network
• Topological Semimetals carrying Arbitrary Hopf Numbers: Hopf-Link, Solomon's-Knot, Trefoil-Knot and Other Semimetals
• Knotted Non-Hermitian Metals
• Nodal Loop and Nodal Surface States in Ti3Al Family Materials
• Photoinduced topological phase transitions in strained black phosphorus
• Bogoliubov Fermi surfaces: General theory, magnetic order, and topology
• Nonsymmorphic symmetry-required band crossings in topological semimetals
• Topological Dirac Nodal-net Fermions in AlB${}_2$-type TiB${}_2$ and ZrB${}_2$
• Quadratic and Cubic Nodal Lines Stabilized by Crystalline Symmetry
• Topolectric circuits: Theory and construction
• Jones polynomial and knot transitions in topological semimetals
• Rules for Phase Shifts of Quantum Oscillations in Topological Nodal-line Semimetals
• Observation of nodal-line semimetal with ultracold fermions in an optical lattice
• Topological spin excitations observed in a three-dimensional antiferromagnet
• Observation of non-Abelian nodal links in photonics
• Hybrid Nodal Loop Metal: Unconventional Magnetoresponse and Material Realization
• Weyl-link semimetals
• Topological correspondence between magnetic space group representations
• Topological nodal states in circuit lattice
• Correlation and transport phenomena in topological nodal-loop semimetals
• Non-abelian topology of nodal-line rings in $\mathcal{P}\mathcal{T}$-symmetric systems
• Many-Body Topological and Skin States without Open Boundaries
• Phononic Weyl Nodal Straight Lines in High-Temperature Superconductor MgB${}_2$
• Higher-order Dirac fermions in three dimensions
• Imaging nodal knots in momentum space through topolectrical circuits
• Interacting line-node semimetal: Proximity effect and spontaneous symmetry breaking
• Topological superconducting phase in high-Tc superconductor MgB2 with Dirac-nodal-line fermions
• Weak Localization and Antilocalization in Nodal-Line Semimetals: Dimensionality and Topological Effects
• Spin-Space Groups and Magnon Band Topology
• Topological carbon materials: a new perspective
• Multifold nodal points in magnetic materials
• Weyl-loop half metal in Li${}_3$(FeO${}_3$)${}_2$
• Nodal Line Spin-gapless Semimetals and High-quality Candidate Materials
• Dirac nodal line metal for topological antiferromagnetic spintronics
• Simulating Exceptional Non-Hermitian Metals with Single-Photon Interferometry
• ${\mathbb{Z}}_2$-projective translational symmetry protected topological phases
• Spinless hourglass nodal-line semimetals
• A Class of topological nodal rings and its realization in carbon networks
• From Type-II Triply Degenerate Nodal Points and Three-Band Nodal Rings to Type-II Dirac Points in Centrosymmetric Zirconium Oxide
• Symmetry indicators of band topology
• Topological nodal-line semimetals in ferromagnetic rare-earth-metal monohalides
• Hopf-link multi-Weyl-loop topological semimetals
• Experimental Observation of Dirac Nodal Links in Centrosymmetric Semimetal TiB${}_2$
• Floquet multi-Weyl points in crossing-nodal-line semimetals
• Global band topology of simple and double Dirac-point (semi-)metals
• Pseudospin Vortex Ring with a Nodal Line in Three Dimensions
• Extremely large magnetoresistance in topologically trivial semimetal $\alpha$-WP${}_2$
• Topological Materials Discovery By Large-order symmetry indicators
• Systematic investigation of emergent particles in type-III magnetic space groups
• Encyclopedia of emergent particles in type-IV magnetic space groups
• Observation of a nodal chain with Dirac surface states in TiB2
• Type-I and type-II Nodal Lines Coexistence in the Antiferromagnetic monolayer CrAs${}_2$
• Ideal inner nodal chain semimetals in Li2XY (X = Ca, Ba; Y = Si, Ge) materials
• Conversion rules for Weyl points and nodal lines in topological media
• Symmorphic and nonsymmorphic symmetries jointly-protected hourglass phonons
• Large magnetoresistance in type-II Weyl semimetal WP${}_2$
• Symmorphic intersecting nodal rings in semiconducting layers
• Topological band crossings in hexagonal materials
• Hourglass Weyl loops in two dimensions: Theory and material realization in monolayer GaTeI family
• Hourglass-like Nodal Net Semimetal in Ag2BiO3
• Crossing-Line-Node Semimetals: General Theory and Application to Rare-Earth Trihydrides
• Strain-induced quantum topological phase transitions in Na3Bi
• SpaceGroupIrep: A package for irreducible representations of space group
• Minimal non-abelian nodal braiding in ideal metamaterials
• Topological Materials Discovery using Electron Filling Constraints
• Universal phase diagrams with superconducting domes for electronic flat bands
• Impurity-induced triple point fermions in twisted bilayer graphene
• Topological Hourglass Dirac Semimetal in the Nonpolar Phase of Ag${}_2$BiO${}_3$
• Proposal for detecting nodal-line semimetal surface-states with resonant spin-flipped reflection
• Interplay between altermagnetism and nonsymmorphic symmetries generating large anomalous Hall conductivity by semi-Dirac points induced anticrossings
• Kramers Nodal Line Metals
• Subdimensional topologies, indicators and higher order phases
• Nonsymmorphic cubic Dirac point and crossed nodal rings across the ferroelectric phase transition in LiOsO${}_3$
• Photoemission Spectroscopic Evidence for the Dirac Nodal Line in Monoclinic Semimetal SrAs${}_3$
• Photoinduced topological phase transition from a crossing-line nodal semimetal to a multiple-Weyl semimetal
• Antiferromagnetic Topological Nodal Line Semimetals
• Experimental observation of non-Abelian earring nodal links in phononic crystals
• Observation of band crossings protected by nonsymmorphic symmetry in the layered ternary telluride Ta3SiTe6
• Weyl points and Dirac lines protected by multiple screw rotations
• Magnetic and electronic properties of a topological nodal line semimetal candidate: HoSbTe
• Coexistence of Tunable Weyl Points and Topological Nodal Lines in Ternary Transition-Metal Telluride TaIrTe4
• From triple-point materials to multiband nodal links
• Two topologically distinct Dirac-line semimetal phases and topological phase transitions in rhombohedrally stacked honeycomb lattices
• Symmetry-enforced band crossings in tetragonal materials: Dirac and Weyl degeneracies on points, lines, and planes
• Crystalline Kitaev spin liquids
• Hourglass Charge-Three Weyl Phonons
• Two-dimensional topological materials discovery by symmetry-indicator method
• Modular Arithmetic with Nodal Lines: Drumhead Surface States in ZrSiTe
• Almost ideal nodal-loop semimetal in monoclinic CuTeO${}_3$ material
• Starfruit-like nodal semimetal to Dirac and Weyl semimetal state in CaAuAs
• Symmetry-Enforced Nodal Chain Phonons
• Hourglass semimetals with nonsymmorphic symmetries in three dimensions
• Degenerate topological line surface phonons in quasi-1D double helix crystal SnIP
• Exhaustive List of Topological Hourglass Band Crossings in 230 Space Groups
• Large magnetoresistance and non-zero Berry phase in the nodal-line semimetal MoO2
• Three-dimensional organic Dirac-line materials due to nonsymmorphic symmetry: a data mining approach
• Underlying topological Dirac nodal line mechanism of anomalously large electron-phonon coupling strength on Be (0001) surface
• Directional massless Dirac fermions in a layered van der Waals material with one-dimensional long-range order
• Extremely large magnetoresistance from electron-hole compensation in the nodal loop semimetal ZrP${}_2$
• High-throughput Investigations of Topological and Nodal Superconductors
• Trivial topological phase of CaAgP and the topological nodal-line transition in CaAg(P1-xAsx)
• Nonsymmorphic Symmetry-Protected Band Crossings in a Square-Net Metal PtPb${}_4$
• Ferromagnetic helical nodal line and Kane-Mele spin-orbit coupling in kagome metal Fe3Sn2
• Topology of Triple-Point Metals
• Quantum Transport in Topological Semimetals under Magnetic Fields (II)
• Fully spin-polarized nodal chain state in half metal LiV${}_2$O${}_4$
• Magneto-optical conductivity of double Weyl semimetals
• From Node-Line Semimetals to Large Gap QSH States in New Family of Pentagonal Group-IVA Chalcogenide
• Three-dimensional flat Landau levels in an inhomogeneous acoustic crystal
• Weakly-correlated nature of ferromagnetism in non symmorphic CrO${}_2$ revealed by bulk-sensitive soft X ray ARPES
• Mirror Protected Multiple Nodal Line Semimetals and Material Realization
• Non-Abelian charged nodal links in dielectric photonic crystal
• Topological Semimetal-Insulator Quantum Phase Transition in Zintl Compounds Ba2X (X=Si, Ge)
• Semi-Dirac Fermions in a Topological Metal
• Symmetry-enforced topological band crossings in orthorhombic crystals: Classification and materials discovery
• Charge density wave induced nodal lines in LaTe${}_3$
• Kramers nodal lines and Weyl fermions in SmAlSi
• Double Dirac Nodal Line Semimetal with Torus Surface State
• Interaction driven surface Chern insulator in nodal line semimetals
• Semi-Dirac and Weyl Fermions in Transition Metal Oxides
• Phonon-Induced Topological Transition to a Type-II Weyl Semimetal
• Calculated magnetic exchange interactions in Dirac magnon material Cu3TeO6
• Double exceptional links in a three-dimensional dissipative cold atomic gas
• Symmetry-enforced band crossings in trigonal materials: Accordion states and Weyl nodal lines
• Symmetry-enforced Band Nodes in 230 Space Groups
• Phase transitions of non-Abelian charged nodal links in a spring-mass system
• Chiral Dirac-like fermion in spin-orbit-free antiferromagnetic semimetals
• Spindle Nodal Chain in Three-Dimensional alpha' Boron
• Hyperbolic Nodal Band Structures and Knot Invariants
• Semimetallic carbon allotrope with topological nodal line in mixed $s{p}^2$-$s{p}^3$ bonding networks
• Multiple Symmetry-Protected Dirac Nodal Lines in A Quasi-One-Dimensional Semimetal
• Multiple band-crossings and Fermi surface topology: role of double nonsymmorphic symmetries in MnP-type crystal structures
• Triple point semimetal and topological phase transitions in NaCu${}_3$Te${}_2$
• Engineering Dirac states in graphene: Coexisting type-I and type-II Floquet-Dirac fermions
• Hopf-chain networks evolved from triple points
• Nodal-chain network, intersecting nodal rings and triple points coexisting in nonsymmorphic Ba3Si4
• Glide-symmetric magnetic topological crystalline insulators with inversion symmetry
• MgTa2N3: A new reference Dirac semimetal
• Three-dimensional topological semimetal phase in layered TaNiTe5 probed by de Haas-van Alphen effect
• Extremely large magnetoresistance and high-density Dirac-like fermions in ZrB2
• Topological nodal lines and hybrid Weyl nodes in YCoC${}_2$
• A hierarchy of multi-moment skyrmion phases in twisted magnetic bilayers
• Symmetry-assisted protection and compensation of hidden spin polarization in centrosymmetric systems
• Topological Gapless Phases in Non-Symmorphic Antiferromagnets
• Universal higher-order bulk-boundary correspondence of triple nodal points
• Anisotropic Nodal-Line-Derived Large Anomalous Hall Conductivity in ZrMnP and HfMnP
• Large Josephson current in Weyl nodal loop semimetals due to odd-frequency superconductivity
• Inherited Weak Topological Insulator Signatures in Topological Hourglass Semimetal Nb3XTe6 (X = Si, Ge)
• Hall coefficient of semimetals
• Nexus networks in carbon honeycombs
• Nodal topological superconductivity in nodal-line semimetals
• Magneto-transport and Shubnikov-de Haas oscillations in the layered ternary telluride Ta3SiTe6 topological semimetal
• Crystalline topological Dirac semimetal phase in rutile structure ${\beta }^{\prime }$-PtO${}_2$
• Nodal line semimetal states in positive electrode material of lead-acid battery: Lead dioxide family and its derivatives
• Experimental demonstration of non-adjacent band topology connecting multiple nodal links
• $2\pi$-flux loop semimetals
• Photonic Dirac Nodal Line Semimetals Realized by Hyper-crystal
• Nodal Brillouin Zone Boundary from Folding a Chern Insulator
• Photonic nodal lines with quadrupole Berry curvature distribution
• Altermagnetic Instabilities from Quantum Geometry
• Origin of the butterfly magnetoresistance in ZrSiS
• Tunable two-dimensional Dirac nodal nets
• Triple nodal points characterized by their nodal-line structure in all magnetic space groups
• Classification and properties of quantum spin liquids on the hyperhoneycomb lattice
• Engineering second-order nodal-line semimetals by breaking $\mathcal{P}\mathcal{T}$ symmetry and periodic driving
• Nonsymmorphic symmetry protected node-line semimetal in the trigonal YH3
• Signature of topological non-trivial band structure in Ta${}_3$SiTe${}_6$
• Broadband optical conductivity of the chiral multifold semimetal PdGa
• Unusual phase transition of layer-stacked borophene under pressure
• Metamagnetism and anomalous magnetotransport properties in rare-earth-based polar semimetals $R$AuGe ($R=$ Dy, Ho, and Gd)
• Demonstration of non-Abelian frame charge flow in photonic crystals
• Quantum oscillations and nontrivial topological state in a compensated semimetal TaP2
• Structure, phase stability, half-metallicity, and fully spin-polarized Weyl states in compound NaV2O4: a new example for topological spintronic material
• Chemical Rules for Stacked Kagome and Honeycomb Topological Semimetals
• Cyclotron orbit knot and tunable-field quantum Hall effect
• Generic phase diagram for Weyl superconductivity in mirror-symmetric superconductors
• Thermoelectric response of nodal-line semimetals: probe of the Fermi surface topology
• Magnetic hourglass fermions: from exhaustive symmetry conditions to high-throughput materials predictions
• Glide Symmetry Protected Higher-Order Topological Insulators from Semimetals with butterfly-like Nodal Lines
• Superconductivity in the nodal-line compound La${}_3$Pt${}_3$Bi${}_4$
• Filling-enforced Dirac loops and their evolutions under various perturbations
• Synthetic spin-orbit coupling and topological polaritons in Janeys-Cummings lattices
• Novel Family of Topological Semimetals with Butterfly-like Nodal Lines
• Quantized Hall conductance in 3D topological nodal-line semimetals without chiral symmetry
• Quasiparticle interference observation of the topologically non-trivial drumhead surface state in ZrSiTe
• Selective Control of Surface Spin Current in Topological Materials based on Pyrite-type OsX2 (X = Se, Te) Crystals
• Magnetotransport Properties and Fermi Surface Topology of Nodal line Semimetal InBi
• Large Fermi-arc and robust Weyl semimetal phase in Ag${}_2$S
• Online Search Tool for Graphical Patterns in Electronic Band Structures
• Topological charge pumping in spin-dependent superlattices with glide symmetry
• Two-dimensional Dirac semiconductor and its material realization
• Dual topological nodal line and nonsymmorphic Dirac semimetal in three dimensions
• $n$-Hourglass Weyl fermions in nonsymmorphic materials
• Superconductivity and a van Hove singularity confined to the surface of a topological semimetal
• Correlations in non-Hermitian systems and Diagram techniques for the steady state
• Nodeless superconductivity in the topological nodal-line semimetal CaSb2
• Non-Hermitian skin effect enforced by nonsymmorphic symmetries
• Movable but not removable band degeneracies in a symmorphic crystal
• Topological nodal chains in optical lattices
• Many-body effects in nodal-line semimetals: correction to the optical conductivity
• Quantum transport observed in films of magnetic topological semimetal EuSb${}_2$
• Light-induced ultrafast glide-mirror symmetry breaking in black phosphorus
• Spin and charge transport in topological nodal-line semimetals
• Impurity-induced resonant states in topological nodal-line semimetals
• Nodal line resonance generating the giant anomalous Hall effect of Co${}_3$Sn${}_2$S${}_2$
• Interlocking nodal chains and their examples in carbon networks
• Symmetry-enforced planar nodal chain phonons in non-symmorphic materials
• Observing the nodal-line conversion determined by the relative homotopy
• Topological nodal superconducting phases and topological phase transition in the hyperhoneycomb lattice
• Towards the theory of types III and IV non-Hermitian Weyl fermions
• Giant Chern number of a Weyl nodal surface without upper limit
• From Nodal Ring Topological Superfluids to Spiral Majorana Modes in Cold Atomic Systems
• Topological properties of non-centrosymmetric superconductors $T$Ir${}_2$B${}_2$ ($T$=Nb, Ta)
• A Hamiltonian Approach for Obtaining Irreducible Projective Representations and the $k\cdot p$ Perturbation for Anti-unitary Symmetry Groups
• Triply degenerate nodal lines in topological and non-topological metals
• IrF4: From Tetrahedral Compass Model to Topological Semimetal
• Characterization of Lifshitz transitions in topological nodal line semimetals
• Gapless Criterion for Crystals from Effective Axion Field
• Two-dimensional Dirac nodal loop magnons in collinear antiferromagnets
• Momentum-dependent spin selection rule in photoemission with glide symmetry
• Topological bound states for quantum charges
• Topological phases in $\alpha$-Li${}_3$N-type crystal structure of light-element compounds
• Triplet-Superconductivity in Triple-Band Crossings
• Kerr effect in tilted nodal loop semimetals
• Encyclopedia of emergent particles in three-dimensional crystals
• Nodal phases in non-Hermitian wallpaper crystals
• Topological electronic properties of silicon
• Electronic Structure of the Bond Disproportionated Bismuthate Ag${}_2$BiO${}_3$
• Topological semimetals and insulators in three-dimensional honeycomb materials
• Topological Signatures in Nodal Semimetals through Neutron Scattering
• Transition from nodal loop to nodal chain phase in a periodically modulated optical lattice
• Selective branching, quenching, and converting of topological modes
• Topological charge distributions of an interacting two-spin system
• Representation Theory for Massless Quasiparticles in Bogoliubov-de Gennes Systems
• Topological semimetal with coexisting nodal points and nodal lines
• A topological Hund nodal line antiferromagnet
• Design triple points, nexus points and related topological phases by stacking monolayers
• Electronic properties of graphyne-$N$ monolayer and its multilayer: even-odd effect and topological nodal line semimetalic phases
• Unconventional Topological Insulators from Extended Topological Band Degeneracies
• Magneto-optical response of the Weyl semimetal NbAs: Experimental results and hyperbolic-band computations
• Morse theory study on the evolution of nodal lines in $\mathcal{P}\mathcal{T}$-symmetric nodal-line semimetals
• Fermi surface and light quasi particles in hourglass nodal chain metal \b{eta}-ReO2
• Floquet-Engineering Weyl Points and Linked Fermi Arcs from Straight Nodal Lines
• Nodal-line semimetals and their variance
• Emergent topology in thin films of nodal line semimetals
• Realization of Hopf-link structure in phonon spectra: Symmetry guidance and High-throughput investigation
• Hilbert band complexes and their applications
• Symmetry-enforced Fermi degeneracy in topological semimetal RhSb${}_3$
• High-chirality and multiquaternion Weyl nodes in hexagonal ReO${}_3$
• Existence of nodal-arc and its evolution into Weyl-nodes in the presence of spin-orbit coupling in TaAs & TaP
• Topological Light Nodal Lines in FCC Lattice
• Realization of multiple topological states and topological phase transitions in (4,0) carbon nanotube derivatives
• Three-dimensional honeycomb carbon: Junction line distortion and novel emergent fermions
• Topological photocurrent responses from chiral surface Fermi arcs
• Sign reversal of magnetoresistivity in massive nodal-line semimetals due to Lifshitz transition of Fermi surface
• Quasi-nodal lines in rhombohedral magnetic materials
• Breakdown of chiral anomaly and emergent phases in Weyl semimetals under orbital magnetic fields
• Biot-Savart law in quantum matter
• Emergence of Nodal-Knot Transitions by Disorder
• Essentially degenerate hidden nodal lines in two-dimensional magnetic layer groups
• Nodal lines in a honeycomb plasmonic crystal with synthetic spin
• Systematic study for two-dimensional $Z_2$ topological phase transitions at high-symmetry points in all layer groups
• Pressure-induced superconductivity and topological phase transitions in the topological nodal-line semimetal SrAs3
• Non-adiabatic corrections to chiral charge pumping in topological nodal semimetals