Topological and Transport Properties of Dirac Fermions in Antiferromagnetic Metallic Phase of Iron-Based Superconductors

Abstract

We investigate Dirac fermions in the antifferomagnetic metallic state of iron-based superconduc- tors. Deriving an effective Hamiltonian for Dirac fermions, we reveal that there exist two Dirac cones carrying the same chirality, contrary to graphene, compensated by a Fermi surface with a quadratic energy dispersion as a consequence of a non-trivial topological property inherent in the band structure. We also find that the presence of the Dirac fermions gives the difference of sign- change temperatures between the Hall coefficient and the thermopower. This is consistent with available experimental data.

arXiv comment5 pages, 4 figures, changed the title, to be published in Physical Review Letters

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Cited by in corpus (57)

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• Anisotropic Dirac electronic structures of AMnBi${}_2$ (A=Sr, Ca)
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• Electronic reconstruction through the structural and magnetic transitions in detwinned NaFeAs
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• Spin and Charge Dynamics Ruled by Antiferromagnetic Order in Iron Pnictides
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• Raman scattering study of Spin-Density-Wave order and electron-phonon coupling in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Magnetotransport in La(Fe,Ru)AsO as a probe of band structure and mobility
• Doping dependence of the Nernst effect in Eu(Fe1-xCox)2As2 - departure from Dirac fermions physics
• Multiorbital Spin Susceptibility in a Magnetically Ordered State - Orbital versus Excitonic Spin Density Wave Scenario
• Thermoelectric properties of iron-based superconductors and parent compounds
• Origin of In-Plane Anisotropy in Optical Conductivity for Antiferromagnetic Metallic Phase of Iron Pnictides
• Optical absorption in two-dimensional materials with tilted Dirac cones
• Signatures of quantum criticality in the thermopower of Ba(Fe(1-x)Co(x))2As2
• Two-dimensional Massless Dirac Fermions in Antiferromagnetic AFe2As2 (A = Ba, Sr)
• Fermi surface with Dirac fermions in CaFeAsF determined via quantum oscillation measurements
• Coexistence of Dirac-Cone States and Superconductivity in Iron Pnictide Ba(Fe${}_{1-x}$Ru${}_x$As)${}_2$
• The three-dimensional electronic structure of the nematic and antiferromagnetic phases of NaFeAs from detwinned ARPES measurements
• Spindynamics in the antiferromagnetic phases of the Dirac metals $A$MnBi${}_2$ ($A=$ Sr, Ca)
• Synthetic non-Abelian gauge fields and gravitomagnetic effects in tilted Dirac cone systems
• Pressure effects on the transport coefficients of Ba(Fe1-xCox)2As2
• Spin-Density-Wave Gap with Dirac Nodes and Two-Magnon Raman Scattering in BaFe2As2
• Emergent vortex Majorana zero mode in iron-based superconductors
• Thermoelectric anisotropy in Ba(Fe1-xCox)2As2 iron-based superconductor
• Evidence for Dirac Nodes from Quantum Oscillations in SrFe${}_2$As${}_2$
• Optical study of Dirac fermions and related phonon anomalies in antiferromagnetic compound CaFeAsF
• Antiferromagnetism in Iron-Based Superconductors: Selection of Magnetic Order and Quasiparticle Interference
• Type-III Dirac Cones from Degenerate Directionally Flat Bands: Viewpoint from Molecular-Orbital Representation
• Anisotropy of the Seebeck and Nernst coefficients in parent compounds of the iron-based superconductors
• Electronic Phase Diagram of SrFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$: Effect of Structural Dimensionality
• Mobility spectrum analytical approach for intrinsic band picture of Ba(FeAs)${}_2$
• Memory function approach to in-plane anisotropic resistivity in the antiferromagnetic phase of iron arsenide superconductors
• Suppression of backward scattering of Dirac fermions in iron pnictides Ba(Fe${}_{1-x}$Ru${}_x$As)${}_2$
• Kondo-like mass enhancement of Dirac fermion in iron pnictides Ba(Fe${}_{1-x}$Mn${}_x$As)${}_2$
• Meissner Effect of Dirac Electrons in Superconducting State due to Inter-band Effect
• Existence of Dirac cones in Brillouin zone of diperiodic atomic crystals according to group theory
• Mapping borophene onto graphene: Quasi-exact solutions for guiding potentials in tilted Dirac cones
• Optical valley separation in two-dimensional semimetals with tilted Dirac cones
• High Field (14Tesla) Magneto Transport of Sm/PrFeAsO
• Scaling of the Fano effect of the in-plane Fe-As phonon and the superconducting critical temperature in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$
• Thermoelectric signature of the nematic phase in iron-based superconductor
• Coexistence of Antiferromagnetism and Superconductivity in Iron-Based Superconductors
• Topological Aspects of Antiferromagnets
• Electronically driven nematicity in FeSe Films on SrTiO3
• Anomalous High-Field Magnetotransport in CaFeAsF due to the Quantum Hall Effect
• Linear scaling relation between two-dimensional massless Dirac fermion Fermi velocity and Fe-As bond length in iron arsenide superconductor systems
• Emergence of the minority hole with high mobility on the electrical transport in the Fe-pnictides Ba(Fe${}_{1-x}$Mn${}_x$As)${}_2$
• Algebraic structure of Dirac fermion state in α-(BDET-TTF)_2I_3
• Designer gapped and tilted Dirac cones in lateral graphene superlattices