Topological nodal-line semimetals in ferromagnetic rare-earth-metal monohalides

Abstract

Topological semimetals, extending the topological classification from insulators to metals, have greatly enriched our understanding of topological states in condensed matter. This is particularly true for topological nodal-line semimetals (TNLSs). In the present paper, we identify layered materials as promising candidates for hosting TNLSs. Based on first-principles calculations and effective model analysis, we propose that layered ferromagnetic rare-earth-metal monohalides LnX (Ln=La, Gd; X=Cl, Br) exhibit long pursued topological phases. Specifically, single-layer LaX and single-layer GdX are ideal two-dimensional (2D) Weyl semimetals and large-gap 2D quantum anomalous Hall insulators (QAHIs), with band gaps up to 61 meV, respectively. In addition, 3D LaX and 3D GdX are TNLSs with a pair of mirror-symmetry protected nodal lines and 3D weak QAHIs, respectively. The nodal lines in 3D LaX extending through the whole Brillouin zone (BZ) are fairly robust against strong spin-orbit coupling (SOC) and located close to the Fermi level, providing a novel platform toward exploring the exotic properties in nodal-line fermions as well as related device designs.

arXiv comment7 pages, 3 figures

References in corpus (47)

• Quantum Spin Hall Effect in Graphene
• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Van der Waals Density Functional for General Geometries
• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Topological Insulators in Three Dimensions
• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• Electronic transport in two dimensional graphene
• Maximally localized Wannier functions: Theory and applications
• WannierTools: An open-source software package for novel topological materials
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)
• Dirac semimetal in three dimensions
• Topological nodal semimetals
• Three Dimensional Dirac Semimetal and Quantum Transports in Cd3As2
• Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
• Topological nodal line semimetals with and without spin-orbital coupling
• Dirac Line Nodes in Inversion Symmetric Crystals
• Topological Nodal Line Semimetal and Dirac Semimetal State in Antiperovskite Cu${}_3$PdN
• Dirac Cone Protected by Non-Symmorphic Symmetry and 3D Dirac Line Node in ZrSiS
• Topological Node-Line Semimetal in Three Dimensional Graphene Networks
• Nodal-chain metals
• High-temperature surface superconductivity in topological flat-band systems
• Topological Semimetals Predicted from First-principles Calculations
• Topological semi-metals with line nodes and drumhead surface states
• Spin-orbit-free Weyl-loop and Weyl-point semimetals in a stable three-dimensional carbon allotrope
• Potential ring of Dirac nodes in a new polymorph of Ca${}_3$P${}_2$
• Transition-Metal Pentatelluride ZrTe${}_5$ and HfTe${}_5$: a Paradigm for Large-gap Quantum Spin Hall Insulators
• Semimetal and Topological Insulator in Perovskite Iridates
• Topological Nodal Line Semimetals in CaP3 family of materials
• New classes of topological crystalline insulators with unpinned surface Dirac cones
• Dirac node lines in pure alkali earth metals
• Landau Level Quantization and Almost Flat Modes in Three-dimensional Semi-metals with Nodal Ring Spectra
• Z2-topology in nonsymmorphic crystalline insulators: Mobius twist in surface states
• Topological Dirac Nodal Lines and Surface Charges in fcc Alkaline Earth Metals
• Long-range Coulomb interaction in nodal-ring semimetals
• From Nodal Chain Semimetal To Weyl Semimetal in HfC
• Topological Node-Line Semimetal in Compressed Black Phosphorus
• Topological Dirac Nodal-net Fermions in AlB${}_2$-type TiB${}_2$ and ZrB${}_2$
• Topological States in Ferromagnetic CdO/EuO Superlattices and Quantum Wells
• From Standard Model of particle physics to room-temperature superconductivity
• Topological semimetal in honeycomb lattice LnSI
• Two topologically distinct Dirac-line semimetal phases and topological phase transitions in rhombohedrally stacked honeycomb lattices
• Emergence of Topological Nodal Lines and Type II Weyl Nodes in Strong Spin--Orbit Coupling System InNbX2(X=S,Se)
• Intrinsic large gap quantum anomalous Hall insulators in La$X$ ($X$=Br, Cl, I)
• Topological Crystalline Metal in Orthorhombic Perovskite Iridates

Cited by in corpus (27)

• Progress and prospects in magnetic topological materials
• The study of magnetic topological semimetals by first principles calculations
• Magnetic semimetals and quantized anomalous Hall effect in EuB6
• Two-dimensional Weyl nodal line semimetal in high Curie temperature d0 ferromagnet K2N monolayer
• Topological classification and diagnosis in magnetically ordered electronic materials
• Application of topological quantum chemistry in electrides
• Six-fold Excitations in Electrides
• Quantum Spin Hall Effect in Ta${}_2$M${}_3$Te${}_5$ (M = Pd, Ni)
• Fully spin-polarized nodal chain state in half metal LiV${}_2$O${}_4$
• Ferromagnetism with in-plane magnetization, Dirac spin-gapless semiconducting property, and tunable topological states in two-dimensional rare-earth-metal dinitrides
• Coexistence of topological Weyl and nodal-ring states in ferromagnetic and ferrimagnetic double perovskites
• Hidden Weyl Fermions in Paramagnetic Electride Y${}_2$C
• Two-dimensional topological semimetal states in monolayers Cu${}_2$Ge, Fe${}_2$Ge, and Fe${}_2$Sn
• Weyl nodal ring states and Landau quantization with very large magnetoresistance in square-net magnet EuGa${}_4$
• Two-dimensional Topological Semimetals Protected by Symmorphic Symmetries
• Structure, phase stability, half-metallicity, and fully spin-polarized Weyl states in compound NaV2O4: a new example for topological spintronic material
• Specular Andreev reflection and its detection
• Symmetry-protected Spinful Magnetic Weyl Nodal Loops and Multi-Weyl Nodes in $5d^n$ Cubic Double Perovskites $(n=1,2)$
• Multi higher-order Dirac and nodal line semimetals
• 5d orbital Induced Room Temperature Quantum Anomalous Hall Effect in TbCl
• Phase diagram of a magnetic topological nodal semimetal: Stable nodal line in an easy-plane ferromagnet
• Detecting competing orders through the edge states in the heterostructures with high-Tc superconductors
• Controllable Josephson diode effect, $0$-$\pi$ transition and switch effect in the superconductor/two-dimensional Weyl nodal line semimetal/superconductor junctions
• Competition-Induced Sign Reversal of Casimir-Lifshitz Torque: An Investigation on Topological Node-Line Semimetal
• Nodal lines and boundary modes in topological Dirac semimetals with magnetism
• Biot-Savart law in quantum matter
• Topological properties of domain walls in antiferromagnetic topological insulators