Topological nodal-line semimetals in alkaline-earth stannides, germanides and silicides

Abstract

Based on first-principles calculations and an effective Hamiltonian analysis, we systematically investigate the electronic and topological properties of alkaline-earth compounds $A{X}_2$ ($A$=Ca, Sr, Ba; $X$=Si, Ge, Sn). Taking BaSn${}_2$ as an example, we find that when spin-orbit coupling is ignored, these materials are three-dimensional topological nodal-line semimetals characterized by a snake-like nodal loop in three-dimensional momentum space. Drumhead-like surface states emerge either inside or outside the loop circle on the (001) surface depending on surface termination, while complicated double-drumhead-like surface states appear on the (010) surface. When spin-orbit coupling is included, the nodal line is gapped and the system becomes a topological insulator with Z${}_2$ topological invariants (1;001). Since spin-orbit coupling effects are weak in light elements, the nodal-line semimetal phase is expected to be achievable in some alkaline-earth germanides and silicides.

13 pages, 5 figures

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Cited by in corpus (105)

• Catalogue of Topological Electronic Materials
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• Predicted Realization of Cubic Dirac Fermion in Quasi-One-Dimensional Transition-Metal MonoChalcogenides
• Magnetic semimetals and quantized anomalous Hall effect in EuB6
• Topological nodal states in circuit lattice
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• Topological carbon materials: a new perspective
• Weyl-loop half metal in Li${}_3$(FeO${}_3$)${}_2$
• Nodal Line Spin-gapless Semimetals and High-quality Candidate Materials
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• Topological semimetals studied by ab initio calculations
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• Crossing-Line-Node Semimetals: General Theory and Application to Rare-Earth Trihydrides
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• Topological and trivial magnetic oscillations in nodal loop semimetals
• Quantum Transport in Topological Semimetals under Magnetic Fields (II)
• Designing 3D topological insulators by 2D-Xene (X = Ge, Sn) sheet functionalization in the GaGeTe-type structures
• Mirror Protected Multiple Nodal Line Semimetals and Material Realization
• Topological Semimetal-Insulator Quantum Phase Transition in Zintl Compounds Ba2X (X=Si, Ge)
• Parity Anomaly in the non-linear response of Nodal-Line Semimetals
• Computational Design of Flexible Electrides with Non-trivial Band Topology
• Universal phase transition and band structures for spinless nodal-line and Weyl semimetals
• Double Dirac Nodal Line Semimetal with Torus Surface State
• Interaction driven surface Chern insulator in nodal line semimetals
• Edge states, corner states, and flat bands in a two-dimensional $\mathcal{P}\mathcal{T}$ symmetric system
• Disorder driven multifractality transition in Weyl nodal loops
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• Hopf-chain networks evolved from triple points
• Nodal-line semimetals from Weyl superlattices
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• Saddle-like topological surface states on the TT'X family of compounds (T, T' = Transition metal, X= Si, Ge)
• Effective Hamiltonian of Topological Nodal Line Semimetal in Single-Component Molecular Conductor [Pd(dddt)${}_2$] from First-Principles
• Perovskite-type YRh${}_3$B with multiple types of nodal point and nodal line states
• Topologically nontrivial electronic states in CaSn${}_3$
• Robust Weyl semimetallic phase in face-centered orthogonal C6 with helical carbon chains
• Spectroscopic Evidence for Dirac Nodal Surfaces and Nodal Rings in Superconductor NaAlSi
• Magnetic susceptibility of topological semimetals
• Nexus networks in carbon honeycombs
• Nodal line semimetal states in positive electrode material of lead-acid battery: Lead dioxide family and its derivatives
• BaSn${}_2$: A new, wide-gap, strong topological insulator
• Magnetization of topological line-node semimetals
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• Floquet Topological Semimetal with Nodal Helix
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• Spin-orbit-stable type-II nodal line band crossing in n-doped monolayer MoX2 (X=S,Se,Te)
• Magnetotransport Properties and Fermi Surface Topology of Nodal line Semimetal InBi
• Topological magnon nodal-lines and absence of magnon spin Nernst effect in layered collinear antiferromagnets
• Role of Velocity Field and Principal Axis of Tilted Dirac Cones in Effective Hamlitonan of Non-Coplanar Nodal Loop
• Type-II Dirac line node in strained Na3N
• Nodal lines and mapping to mirror Chern numbers in Ca${}_2$As family
• Two-dimensional Dirac nodal loop magnons in collinear antiferromagnets
• Prediction of $\mathrm{TiRhAs}$ as a Dirac Nodal Line Semimetal via First-Principles Calculations
• Tunneling in an anisotropic cubic Dirac semi-metal
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• Tunneling phase diagrams in anisotropic Multi-Weyl semimetals
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• Dissipationless transport signature of topological nodal lines
• Oscillations of magnetization in topological line-node semimetals
• Graphite on graphite
• Electronic properties of graphyne-$N$ monolayer and its multilayer: even-odd effect and topological nodal line semimetalic phases
• Interplay of magnetism and band topology in Eu${}_{1-x}$Ca${}_x$Mg${}_2$Bi${}_2$ (x=0, 0.5) from first principles study
• Design triple points, nexus points and related topological phases by stacking monolayers
• Mapping rules from nodal line semimetal to topological crystalline insulator in face centered cubic lattice
• Finite size and volume effects in line node semimetals: a first-principles investigation
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• Increasing the number of topological nodal lines in semimetals via uniaxial pressure
• Signature of topological crystalline insulating behavior in new B2X2Zn (X=Ir, Rh, Co) compound from first-principles Computation
• Triply degenerate nodal line and tunable contracted-drumhead surface state in a tight-binding model
• Nodal-line semimetal superlattices