Anisotropic Dirac electronic structures of AMnBi${}_2$ (A=Sr, Ca)

Abstract

Low energy electronic structures in AMnBi2 (A=alkaline earths) are investigated using a first-principles calculation and a tight binding method. An anisotropic Dirac dispersion is induced by the checkerboard arrangement of A atoms above and below the Bi square net in AMnBi2. SrMnBi2 and CaMnBi2 have a different kind of Dirac dispersion due to the different stacking of nearby A layers, where each Sr (Ca) of one side appears at the overlapped (alternate) position of the same element at the other side. Using the tight binding analysis, we reveal the chirality of the anisotropic Dirac electrons as well as the sizable spin-orbit coupling effect in the Bi square net. We suggest that the Bi square net provides a platform for the interplay between anisotropic Dirac electrons and the neighboring environment such as magnetism and structural changes.

11 pages, 11 figures

References in corpus (7)

• The electronic properties of graphene
• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Quantum transport of two-dimensional Dirac fermions in SrMnBi2
• Two dimensional Dirac fermions and quantum magnetoresistance in CaMnBi${}_2$
• Topological and Transport Properties of Dirac Fermions in Antiferromagnetic Metallic Phase of Iron-Based Superconductors
• Large magnetothermopower effect in Dirac materials (Sr/Ca)MnBi2

Cited by in corpus (61)

• Dirac Cone Protected by Non-Symmorphic Symmetry and 3D Dirac Line Node in ZrSiS
• Observation of Topological Nodal Fermion Semimetal Phase in ZrSiS
• Spin-group symmetry in magnetic materials with negligible spin-orbit coupling
• Quantum Hall effect in a bulk antiferromagnet EuMnBi${}_2$ with magnetically confined two-dimensional Dirac fermions
• Topological Semimetals in Square-Net Materials
• Effect of Eu magnetism on the electronic properties of the candidate Dirac material EuMnBi2
• Coupling of magnetic order to planar Bi electrons in the anisotropic Dirac metals AMnBi2 (A = Sr, Ca)
• Nearly massless Dirac fermions hosted by Sb square net in BaMnSb2
• Route Towards Dirac and Weyl Antiferromagnetic Spintronics
• Quantum Oscillations and Coherent Interlayer Transport in a New Topological Dirac Semimetal Candidate: YbMnSb${}_2$
• Interplay of Dirac electrons and magnetism in AMnBi2 (A=Ca, Sr)
• Electron-hole asymmetry, Dirac fermions, and quantum magnetoresistance in BaMnBi2
• Unusual magneto-transport from Si-square nets in topological semimetal HfSiS
• Electrodynamic response of type II Weyl semimetals
• Antiferromagnetic Dirac Semimetals in Two Dimensions
• A systematic study of stacked square nets: from Dirac fermions to material realizations
• Bulk quantum Hall effect of spin-valley-coupled Dirac fermions in a polar antiferromagnet BaMnSb${}_2$
• Magnetic and electronic structure of Dirac semimetal candidate EuMnSb${}_2$
• Correlated materials design: prospects and challenges
• Observation of Dirac-like band dispersion in LaAgSb${}_2$
• An optical investigation of the strong spin-orbital coupled magnetic semimetal YbMnBi${}_2$
• Revealing the ultrafast light-to-matter energy conversion before heat diffusion in a layered Dirac semimetal
• Large linear magnetoresistance in a new Dirac material BaMnBi2
• Magnetic mixed valent semimetal EuZnSb${}_2$ with Dirac states in the band structure
• Impact of antiferromagnetic order on Landau level splitting of quasi-two-dimensional Dirac fermions in EuMnBi${}_2$
• Observation of topological nodal-line semimetal in YbMnSb2 through optical spectroscopy
• Magnetic structures, spin-flop transition and coupling of Eu and Mn magnetism in the Dirac semimetal EuMnBi${}_2$
• Superconductivity and Dirac Fermions in 112-phase Pnictides
• Signatures of coupling between spin waves and Dirac fermions in YbMnBi${}_2$
• Interlayer electronic transport in CaMnBi${}_2$ antiferromagnet
• Distinct multiple fermionic states in a single topological metal
• Prediction of the High Thermoelectric Performance of Pnictogen Dichalcogenide Layered Compounds with Quasi-One-Dimensional Gapped Dirac-like Band Dispersion
• Quantum oscillations and Dirac dispersion in the BaZnBi2 semimetal guaranteed by local Zn vacancy order
• Absence of Dirac states in BaZnBi${}_2$ induced by spin-orbit coupling
• Tunable spin-valley coupling in layered polar Dirac metals
• Magneto-transport and Electronic Structures of BaZnBi${}_2$
• Weyl nodal ring states and Landau quantization with very large magnetoresistance in square-net magnet EuGa${}_4$
• Canted Antiferromagnetic phases in the layered candidate Weyl material EuMnSb${}_2$
• Phase stability and large in-plane resistivity in the 112-type iron-based superconductor Ca${}_{1-x}$La${}_x$FeAs${}_2$
• Enhancing thermopower and Nernst signal of high-mobility Dirac carriers by Fermi level tuning in the layered magnet EuMnBi${}_2$
• Twisted nodal wires and three-dimensional quantum spin Hall effect in distorted square-net compounds
• Magnetic tuning of band topology evidenced by exotic quantum oscillations in the Dirac semimetal EuMnSb${}_2$
• Infrared spectroscopic studies of the topological properties in CaMnSb2
• Electronic Structure Examination on the Topological Properties of CaMnSb${}_2$ by Angle-Resolved Photoemission Spectroscopy
• Field-induced spin reorientation in the antiferromagnetic Dirac material EuMnBi${}_2$ revealed by neutron and resonant x-ray diffraction
• Interwoven atypical quantum states in CeLiBi${}_2$
• Unified low-energy effective Hamiltonian and the band topology of $p$-block square-net layer derivatives
• High-field Studies on Layered Magnetic and Polar Dirac Metals
• Magnetotransport studies of the Sb square-net compound LaAgSb${}_2$ under high pressure and rotating magnetic fields
• Spin dynamics of a magnetic Weyl semimetal Sr${}_{1-x}$Mn${}_{1-y}$Sb${}_2$
• Controlling Magnetic Order, Magnetic Anisotropy, and Band Topology in Semimetals $\mathrm{Sr}(\mathrm{M}{\mathrm{n}}_{0.9}\mathrm{C}{\mathrm{u}}_{0.1})\mathrm{S}{\mathrm{b}}_2$ and $\mathrm{Sr}(\mathrm{M}{\mathrm{n}}_{0.9}\mathrm{Z}{\mathrm{n}}_{0.1})\mathrm{S}{\mathrm{b}}_2$
• Observation of quantum oscillations, linear magnetoresistance, and crystalline electric field effect in quasi-two-dimensional PrAgBi${}_2$
• Strong Anisotropy of Dirac Cone in SrMnBi2 and CaMnBi2 Revealed by Angle-Resolved Photoemission Spectroscopy
• Massive Dirac fermions in layered BaZnBi${}_2$
• Hole Doping and Antiferromagnetic Correlations above the N{é}el temperature of the Topological Semimetal (Sr${}_{1-x}$K${}_x$)MnSb${}_2$
• Molecular beam deposition of a new layered pnictide with distorted Sb square nets
• Magnetotransport in Layered Dirac Fermion System Coupled with Magnetic Moments
• Coupling of magnetism and Dirac fermions in YbMnSb2
• Fragile superconductivity in a Dirac metal
• Spin wave approach to the two-magnon Raman scattering in an J1x-J1y-J2-Jc antiferromagnetic Heisenberg model
• Field-induced metal-to-insulator transition and colossal anisotropic magnetoresistance in a nearly Dirac material EuMnSb${}_2$