Anisotropic Dirac fermions in a Bi square net of SrMnBi2

Abstract

We report the highly anisotropic Dirac fermions in a Bi square net of SrMnBi2, based on a first principle calculation, angle resolved photoemission spectroscopy, and quantum oscillations for high-quality single crystals. We found that the Dirac dispersion is generally induced in the (SrBi)+ layer containing a double-sized Bi square net. In contrast to the commonly observed isotropic Dirac cone, the Dirac cone in SrMnBi2 is highly anisotropic with a large momentum-dependent disparity of Fermi velocities of ~ 8. These findings demonstrate that a Bi square net, a common building block of various layered pnictides, provide a new platform that hosts highly anisotropic Dirac fermions.

5 pages, 4 figures

References in corpus (5)

• The electronic properties of graphene
• Intrinsic and Rashba Spin-orbit Interactions in Graphene Sheets
• Anisotropic behaviors of massless Dirac fermions in graphene under periodic potential
• Merging of Dirac points in a two-dimensional crystal
• A new magnetic field dependence of Landau levels on a graphene like structure

Cited by in corpus (121)

• Dirac Cone Protected by Non-Symmorphic Symmetry and 3D Dirac Line Node in ZrSiS
• Quantum transport evidence for a three-dimensional Dirac semimetal phase in Cd3As2
• Observation of Topological Nodal Fermion Semimetal Phase in ZrSiS
• 3D Dirac semimetals: current materials, design principles and predictions of new materials
• Electronic Transport and quantum oscillation of Topological Semimetals
• 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
• Anisotropic giant magnetoresistance in NbSb2
• A magnetic topological semimetal Sr1-yMn1-zSb2 (y, z< 0.1)
• Topological Semimetals in Square-Net Materials
• High mobility in a van der Waals layered antiferromagnetic metal
• Quantum transport of two-dimensional Dirac fermions in SrMnBi2
• Quantum Transport in Topological Semimetals under Magnetic Fields
• Pi Berry phase and Zeeman splitting of TaP probed by high field magnetotransport measurements
• Two dimensional Dirac fermions and quantum magnetoresistance in CaMnBi${}_2$
• Anisotropic Dirac electronic structures of AMnBi${}_2$ (A=Sr, Ca)
• Anomalous Phase Shift of Quantum Oscillations in 3D Topological Semimetals
• Rules for Phase Shifts of Quantum Oscillations in Topological Nodal-line Semimetals
• 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)
• Nontrivial Berry phase in magnetic BaMnSb2 semimetal
• Nearly massless Dirac fermions hosted by Sb square net in BaMnSb2
• Higher-Order Nonlinear Anomalous Hall Effects Induced by Berry Curvature Multipoles
• Electron carriers with possible Dirac-cone-like dispersion in FeSe${}_{1-x}$S${}_x$ ($x$ = 0 and 0.14) single crystals triggered by structural transition
• Quantum Oscillations and Coherent Interlayer Transport in a New Topological Dirac Semimetal Candidate: YbMnSb${}_2$
• Observation of quasi-two-dimensional Dirac fermions in ZrTe5
• Route Towards Dirac and Weyl Antiferromagnetic Spintronics
• Multiband effects and the possible Dirac states in LaAgSb${}_2$
• Interplay of Dirac electrons and magnetism in AMnBi2 (A=Ca, Sr)
• Review of annealing effects and superconductivity in Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$ superconductors
• Multiband Effect and Possible Dirac Fermions in Fe${}_{1+y}$Te${}_{0.6}$Se${}_{0.4}$
• Electron-hole asymmetry, Dirac fermions, and quantum magnetoresistance in BaMnBi2
• Unusual magneto-transport from Si-square nets in topological semimetal HfSiS
• Low-Energy Effective Hamiltonian and the Surface States of Ca_3PbO
• 1T`-MoTe2 single crystal: a possible topological superconductor
• Evaluation of spin diffusion length and spin Hall angle of antiferromagnetic Weyl semimetal Mn${}_3$Sn
• Observation of two-dimensional Fermi surface and Dirac dispersion in YbMnSb${}_2$
• Dirac Fermion in Strongly-Bound Graphene Systems
• Electrodynamic response of type II Weyl semimetals
• Quasi-two-dimensional Dirac fermions and quantum magnetoresistance in LaAgBi${}_2$
• Type-I and type-II Nodal Lines Coexistence in the Antiferromagnetic monolayer CrAs${}_2$
• 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${}_2$
• Unusual interlayer quantum transport behavior caused by the zeroth Landau level in YbMnBi2
• Magnetic and electronic structure of Dirac semimetal candidate EuMnSb${}_2$
• Correlated materials design: prospects and challenges
• Observation of Dirac-like band dispersion in LaAgSb${}_2$
• Scalable Growth of High Mobility Dirac Semimetal Cd3As2 Microbelts
• 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
• Magnetic mixed valent semimetal EuZnSb${}_2$ with Dirac states in the band structure
• Large linear magnetoresistance in a new Dirac material BaMnBi2
• Impact of antiferromagnetic order on Landau level splitting of quasi-two-dimensional Dirac fermions in EuMnBi${}_2$
• Large magnetothermopower effect in Dirac materials (Sr/Ca)MnBi2
• Observation of topological nodal-line semimetal in YbMnSb2 through optical spectroscopy
• Giant Linear Magneto-resistance in Nonmagnetic PtBi2
• Observation of well-defined quasi-particle over a wide energy range in quasi-2D system
• Two-dimensional Massless Dirac Fermions in Antiferromagnetic AFe2As2 (A = Ba, Sr)
• Quantum Transport in Topological Semimetals under Magnetic Fields (II)
• Electrically tunable multiple Dirac cones in thin films of (LaO)2(SbSe2)2 family of materials
• Crystal growth, microstructure and physical properties of SrMnSb${}_2$
• Quantum oscillation evidence of topological semimetal phase in ZrSnTe
• Non-trivial topology in a layered Dirac nodal-line semimetal candidate SrZnSb${}_2$ with distorted Sb square nets
• Nodal Semimetals: A Survey on Optical Conductivity
• Spindynamics in the antiferromagnetic phases of the Dirac metals $A$MnBi${}_2$ ($A=$ Sr, Ca)
• 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
• Bulk and surface electronic structure of trigonal structured PtBi2 studied by angle-resolved photoemission spectroscopy
• Signatures of coupling between spin waves and Dirac fermions in YbMnBi${}_2$
• Interlayer electronic transport in CaMnBi${}_2$ antiferromagnet
• Quantum oscillation and nontrivial transport in the Dirac Semimetal Cd3As2 nanodevice
• Prediction of the High Thermoelectric Performance of Pnictogen Dichalcogenide Layered Compounds with Quasi-One-Dimensional Gapped Dirac-like Band Dispersion
• Large linear magnetoresistance and magnetothermopower in layered SrZnSb${}_2$
• Hidden local symmetry breaking in a kagome-lattice magnetic Weyl semimetal
• 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
• Distinguishing the gapped and Weyl semimetal scenario in ZrTe${}_5$: insights from an effective two-band model
• Tunable spin-valley coupling in layered polar Dirac metals
• Magneto-transport and Electronic Structures of BaZnBi${}_2$
• Electronic band structure and surface states in Dirac semimetal LaAgSb${}_2$
• Magnetic and electronic structure of the topological semimetal YbMnSb${}_2$
• $\pi$ Spin Berry Phase in a Quantum-Spin-Hall-Insulator-Based Interferometer: Evidence for the Helical Spin Texture of the Edge States
• Phase stability and large in-plane resistivity in the 112-type iron-based superconductor Ca${}_{1-x}$La${}_x$FeAs${}_2$
• Magnetic tuning of band topology evidenced by exotic quantum oscillations in the Dirac semimetal EuMnSb${}_2$
• Enhancing thermopower and Nernst signal of high-mobility Dirac carriers by Fermi level tuning in the layered magnet EuMnBi${}_2$
• Electronic Structure Examination on the Topological Properties of CaMnSb${}_2$ by Angle-Resolved Photoemission Spectroscopy
• Tuning quantum transport by controlling spin reorientations in Dirac semimetal candidates Eu${}_{1-x}$Sr${}_x$MnSb${}_2$
• Infrared spectroscopic studies of the topological properties in CaMnSb2
• Field-induced spin reorientation in the antiferromagnetic Dirac material EuMnBi${}_2$ revealed by neutron and resonant x-ray diffraction
• Pressure-Induced Large Volume Collapse, Plane-to-Chain, Insulator to Metal Transition in CaMn${}_2$Bi${}_2$
• Structural-transition-induced quasi two-dimensional Fermi surface in FeSe
• Observation of anisotropic Dirac cones in the topological material Ti2Te2P
• Phase Slips and Parity Jumps in Quantum Oscillations of Inverted InAs/GaSb Quantum Wells
• Vanishing of the quantum spin Hall phase in a semi-Dirac Kane Mele model
• Interwoven atypical quantum states in CeLiBi${}_2$
• Veselago focusing of anisotropic massless Dirac fermions
• Topological antiferromagnetic spintronics: Part of a collection of reviews on antiferromagnetic spintronics
• 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 $\mathrm{Sr}(\mathrm{M}{\mathrm{n}}_{0.9}\mathrm{Z}{\mathrm{n}}_{0.1})\mathrm{S}{\mathrm{b}}_2$
• Magnetotransport studies of the Sb square-net compound LaAgSb${}_2$ under high pressure and rotating magnetic fields
• High-field Studies on Layered Magnetic and Polar Dirac Metals
• Unusual Electronic Structure of Dirac Material BaMnSb${}_2$ Revealed by Angle-Resolved Photoemission Spectroscopy
• Spin Dynamics in the Antiferromagnetic Oxypnictides and Fluoropnictides: LaMnAsO, LaMnSbO, and BaMnAsF
• Massive Dirac fermions in layered BaZnBi${}_2$
• Observation of quantum oscillations, linear magnetoresistance, and crystalline electric field effect in quasi-two-dimensional PrAgBi${}_2$
• Linear unsaturated magnetoresistance in YSi single crystal
• Strong Anisotropy of Dirac Cone in SrMnBi2 and CaMnBi2 Revealed by Angle-Resolved Photoemission Spectroscopy
• Molecular beam deposition of a new layered pnictide with distorted Sb square nets
• Hole Doping and Antiferromagnetic Correlations above the N{é}el temperature of the Topological Semimetal (Sr${}_{1-x}$K${}_x$)MnSb${}_2$
• Magnetotransport in Layered Dirac Fermion System Coupled with Magnetic Moments
• Inducing anisotropies in Dirac fermions by periodic driving
• High electrical conduction of Sb square net in anti-ThCr${}_2$Si${}_2$ type La${}_2$O${}_2$Sb thin film grown by multilayer solid-phase epitaxy
• Quasi-linear magnetoresistance and paramagnetic singularity in Hypervalent Bismuthide
• NMR evidence for a Peierls transition in the layered square-net compound LaAgSb${}_2$
• Increased hole mobility in anti-ThCr${}_2$Si${}_2$-type La${}_2$O${}_2$Bi co-sintered with alkaline earth metal oxides for oxygen intercalation and hole carrier doping
• C-type antiferromagnetic structure of topological semimetal CaMnSb${}_2$
• Coupling of magnetism and Dirac fermions in YbMnSb2
• Spin wave approach to the two-magnon Raman scattering in an J1x-J1y-J2-Jc antiferromagnetic Heisenberg model
• Material realization of spinless, covalent-type Dirac semimetals in three dimensions
• Giant-exchange-driven Vectorial Control of a Minimal Topological Magnet in Eu3In2As4