Electron-hole asymmetry, Dirac fermions, and quantum magnetoresistance in BaMnBi2

Abstract

We report two-dimensional quantum transport and Dirac fermions in BaMnBi2 single crystals. BaMnBi2 is a layered bad metal with highly anisotropic conductivity and magnetic order below 290 K. Magnetotransport properties, nonzero Berry phase, small cyclotronmass, and the first-principles band structure calculations indicate the presence of Dirac fermions in Bi square nets. Quantum oscillations in the Hall channel suggest the presence of both electron and hole pockets, whereas Dirac and parabolic states coexist at the Fermi level.

References in corpus (23)

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• Topological Insulators
• Topological insulators and superconductors
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• Topological Insulator Materials
• Dirac materials
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• Quantum transport evidence for a three-dimensional Dirac semimetal phase in Cd3As2
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• Anisotropic Dirac electronic structures of AMnBi${}_2$ (A=Sr, Ca)
• Fermi pockets and quantum oscillations of the Hall coefficient in high temperature superconductors
• Coupling of magnetic order to planar Bi electrons in the anisotropic Dirac metals AMnBi2 (A = Sr, Ca)
• Phase diagram of bismuth in the extreme quantum limit
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• Observation of well-defined quasi-particle over a wide energy range in quasi-2D system
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Cited by in corpus (34)

• Electronic Transport and quantum oscillation of Topological Semimetals
• Topological Semimetals in Square-Net Materials
• 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
• Quantum Oscillations and Coherent Interlayer Transport in a New Topological Dirac Semimetal Candidate: YbMnSb${}_2$
• Unusual magneto-transport from Si-square nets in topological semimetal HfSiS
• 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
• 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${}_2$
• Observation of topological nodal-line semimetal in YbMnSb2 through optical spectroscopy
• Highly anisotropic interlayer magnetoresistance in ZrSiS nodal-line Dirac semimetal
• Magnetic structure and excitations of the topological semimetal YbMnBi${}_2$
• 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
• Magnetic structures, spin-flop transition and coupling of Eu and Mn magnetism in the Dirac semimetal EuMnBi${}_2$
• Interlayer electronic transport in CaMnBi${}_2$ antiferromagnet
• 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${}_2$
• 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${}_2$
• Infrared spectroscopic studies of the topological properties in CaMnSb2
• Spin dynamics of a magnetic Weyl semimetal Sr${}_{1-x}$Mn${}_{1-y}$Sb${}_2$
• Magnetotransport studies of the Sb square-net compound LaAgSb${}_2$ under high pressure and rotating magnetic fields
• Unified low-energy effective Hamiltonian and the band topology of $p$-block square-net layer derivatives
• Highly Mobile Carriers in a Candidate of Quasi-Two-Dimensional Topological Semimetal AuTe${}_2$Br
• Observation of quantum oscillations, linear magnetoresistance, and crystalline electric field effect in quasi-two-dimensional PrAgBi${}_2$
• Massive Dirac fermions in layered BaZnBi${}_2$
• Field-induced metal-to-insulator transition and colossal anisotropic magnetoresistance in a nearly Dirac material EuMnSb${}_2$
• Evidence of Spin-Valley Coupling in Dirac Material BaMnBi2 Probed by Quantum Hall Effect and Nonlinear Hall Effect