Weyl Nodal Line-Surface Half-metal in CaFeO${}_3$

Abstract

Manipulating the spin degrees of freedom of electrons affords an excellent platform for exploring novel quantum states in condensed-matter physics and material science. Based on first-principles calculations and analysis of crystal symmetries, we propose a fully spin-polarized composite semimetal state, which is combined with the one-dimensional nodal lines and two-dimensional nodal surfaces, in the half-metal material CaFeO${}_3$. In the nodal line-surface states, the Baguenaudier-like nodal lines feature six rings linked together, which are protected by the three independent symmetry operations:$\mathcal{P}\mathcal{T}$, ${\mathcal{M}}_y$, and ${\tilde{\mathcal{M}}}_z$. Near the Fermi level, the spin-polarized nodal surface states are guaranteed by the joint operation $\mathcal{T}{\mathcal{S}}_{2i}$ in the $k_{i(i=x,y,z)}=\pi$ plane. Furthermore, high-quality CaFeO${}_3$ harbors ultra-clean energy dispersion, which is rather robust against strong triaxial compressional strain and correlation effect. The realization of the Weyl nodal line-surface half-metal presents great potential for spintronics applications with high speed and low power consumption.

arXiv comment5 figures + 1 table

References in corpus (50)

• Spintronics: Fundamentals and applications
• $Z_2$ Topological Order and the Quantum Spin Hall Effect
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Wannier90: A Tool for Obtaining Maximally-Localised Wannier Functions
• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
• WannierTools: An open-source software package for novel topological materials
• Type-II Weyl Semimetals
• Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)
• Three Dimensional Dirac Semimetal and Quantum Transports in Cd3As2
• Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
• Weyl semimetal phase in non-centrosymmetric transition metal monophosphides
• Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
• Large intrinsic anomalous Hall effect in half-metallic ferromagnet Co3Sn2S2 with magnetic Weyl fermions
• Prediction of the Weyl semimetal in the orthorhombic MoTe2
• SCAN+rVV10: A promising van der Waals density functional
• High-temperature surface superconductivity in topological flat-band systems
• Time-Reversal-Breaking Weyl Fermions in Magnetic Heusler Alloys
• Nodal surface semimetals: Theory and material realization
• Nodal-link semimetals
• Node-Surface and Node-Line Fermions From Nonsymmorphic Lattice Symmetries
• Topological Hopf and chain link semimetal states and their application to Co2MnGa (Theory and Materials Prediction)
• Topological nodal-line semimetals in alkaline-earth stannides, germanides and silicides
• Towards Three-Dimensional Weyl-SurfaceSemimetals in Graphene Networks
• Type-II nodal loops: theory and material realization
• Robust Type-II Weyl Semimetal Phase in Transition Metal Diphosphides XP${}_2$ (X = Mo, W)
• From Nodal Chain Semimetal To Weyl Semimetal in HfC
• Two-dimensional Weyl Half Semimetal and Tunable Quantum Anomalous Hall Effect in Monolayer PtCl${}_3$
• Hourglass Dirac Chain Metal in Rhenium Dioxide
• Topological nodal line states and a potential catalyst of hydrogen evolution in the TiSi family
• Ideal Weyl semimetals in the chalcopyrites CuTlSe2, AgTlTe2, AuTlTe2 and ZnPbAs2
• Nodal Loop and Nodal Surface States in Ti3Al Family Materials
• Ferromagnetic hybrid nodal loop and switchable type-I and type-II Weyl fermions in two-dimension
• Two-dimensional nodal-loop half metal in monolayer MnN
• $d$-Orbital Topological Insulator and Semimetal in Antifluorite Cu${}_2$S Family: Contrasting Spin Helicities, Nodal Box, and Hybrid Surface States
• Weyl-loop half metal in Li${}_3$(FeO${}_3$)${}_2$
• Nodal Line Spin-gapless Semimetals and High-quality Candidate Materials
• Circumventing the no-go theorem: A single Weyl point surrounded by nodal walls
• Loop-nodal and Point-nodal Semimetals in Three-dimensional Honeycomb Lattices
• From Standard Model of particle physics to room-temperature superconductivity
• Symmorphic intersecting nodal rings in semiconducting layers
• Antiferromagnetic Topological Nodal Line Semimetals
• Fully spin-polarized nodal loop semimetals in alkaline-metal monochalcogenide monolayers
• Dirac semimetal phase in the hexagonal LiZnBi
• Fully spin-polarized nodal chain state in half metal LiV${}_2$O${}_4$
• Mirror Protected Multiple Nodal Line Semimetals and Material Realization
• Magnetic Weyl semimetals with diamond structure realized in spinel compounds
• Weyl nodal point-line Fermion in ferromagnetic Eu${}_5$Bi${}_3$
• Nodal line semimetal states in positive electrode material of lead-acid battery: Lead dioxide family and its derivatives

Cited by in corpus (4)

• Crystal Thermal Transport in Altermagnetic RuO2
• Sign-reversible valley-dependent Berry phase effects in 2D valley-half-semiconductors
• Signature of half-metallicity in ${\text{BiFeO}}_{\text{3}}$
• Quasi-nodal lines in rhombohedral magnetic materials