Influences of spin-orbit coupling on Fermi surfaces and Dirac cones in ferroelectric-like polar metals

Abstract

Based on first-principles calculations and k .p effective models, we report physical properties of ferroelectric-like hexagonal polar metals with P63mc symmetry, which are distinct from those of conventional metals with spatial inversion symmetry. Spin textures exist on the Fermi surface of polar metals (e.g. ternary LiGaGe and elemental polar metal of Bi) and spin-momentum locking exist on accidental Dirac cones on the sixfold rotational axis, due to the spin-orbit coupling and lack of inversion symmetry in polar space group. This effect has potential applications in spin-orbitronics. Dirac points are also predicted in LiGaGe.

arXiv comment14 pages, 8 figures

References in corpus (21)

• Model Hamiltonian for Topological Insulators
• A ferroelectric-like structural transition in a metal
• Negative Magnetoresistance in Dirac Semimetal Cd3As2
• Multiple types of topological fermions in transition metal silicides
• Experimental Realization of Type-II Dirac Fermions in PdTe${}_2$ Superconductor
• Type-II Dirac fermions in the PtSe${}_2$ class of transition metal dichalcogenides
• Hexagonal $ABC$ as semiconducting ferroelectrics
• Class of Rashba ferroelectrics in hexagonal semiconductors
• Artificial two-dimensional polar metal at room temperature
• Origin of Polar Distortion in LiNbO3-type "Ferroelectric" Metals: Role of A-site Instability and Short-Range Interactions
• Design of a Mott Multiferroic from a Non-Magnetic Polar Metal
• Hybrid Dirac Semimetal in CaAgBi Materials Family
• The Dirac-Weyl semimetal: Coexistence of Dirac and Weyl fermions in polar hexagonal $ABC$ crystals
• Dual nature of the ferroelectric and metallic state in LiOsO${}_3$
• Metallic ferroelectricity induced by anisotropic unscreened coulomb interaction in LiOsO3
• Intertwined Rashba, Dirac and Weyl Fermions in Hexagonal Hyperferroelectrics
• Hidden Weyl Points in Centrosymmetric Paramagnetic Metals
• Dirac semimetal phase in the hexagonal LiZnBi
• Electronic correlation assisted ferroelectric metallic state in LiOsO${}_3$
• Raman phonons in the ferroelectric-like metal LiOsO${}_3$
• Parity-breaking in single-element phases: Ferroelectric-like elemental polar metals

Cited by in corpus (4)

• Noncentrosymmetric topological Dirac semimetals in three dimensions
• Coupled magnetic and structural phase transitions in the antiferromagnetic polar metal Pb2CoOsO6 under pressure
• Single crystal growths and magnetic properties of hexagonal polar semimetals RAuGe (R = Y, Gd-Tm, and Lu)
• Quantum fluctuation of ferroelectric order in polar metals