Mobility spectrum analytical approach for intrinsic band picture of Ba(FeAs)${}_2$

Abstract

Unconventional high temperature superconductivity as well as three-dimensional bulk Dirac cone quantum states arising from the unique d-orbital topology has been a recent priority research area in physics. In iron pnictide compounds, although transport phenomena arisen from this multiple band Fermi surface are intriguing and scientifically important, they still do not give an adequate matching to neither experimental observations on the band picture nor theoretical calculations and a debate continues. Here we describe a new analytical approach of mobility spectrum, in which the carrier number is conveniently described as a function of mobility without any hypothesis about the number of carriers, on both longitudinal and transverse transport of high quality single crystal Ba(FeAs)${}_2$ in a wide range of magnetic field. We show that the major numbers of carriers reside in large parabolic hole and electron pockets with very different topology as well as remarkably different mobility spectra, while the minor number of Dirac carriers resides in both hole- and electron- Dirac quantum states with the largest mobility as high as 70,000 cm${}^2$(Vs)${}^{-1}$.

arXiv comment7 pages, 3 figures

References in corpus (19)

• Evidence for an electron nematic phase transition in underdoped iron pnictide superconductors
• Magnetism and Charge Dynamics in Iron Pnictides
• Nodal Spin Density Wave and band topology of the FeAs based materials
• Observation of Dirac Cone Electronic Dispersion in BaFe2As2
• Unprecedented anisotropic metallic state in BaFe2As2 revealed by optical spectroscopy
• Orbital-dependent modifications of electronic structure across magneto-structural transition in BaFe2As2
• Two dimensional Dirac fermions and quantum magnetoresistance in CaMnBi${}_2$
• Electron and hole Dirac cone states in-pairs in Ba(FeAs)${}_2$ confirmed by magnetoresistance
• Quantum oscillations in the parent pnictide BaFe${}_2$As${}_2$ : itinerant electrons in the reconstructed state
• Anisotropy of the in-plane resistivity of underdoped Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ superconductors induced by impurity scattering in the antiferromagnetic orthorhombic phase
• Complete Fermi surface in BaFe${}_2$As${}_2$ observed via Shubnikov-de Haas oscillation measurements on detwinned single crystals
• Topological and Transport Properties of Dirac Fermions in Antiferromagnetic Metallic Phase of Iron-Based Superconductors
• Manifestations of multiple-carrier charge transport in the magnetostructurally ordered phase of undoped BaFe${}_2$As${}_2$
• Quasi-two-dimensional Dirac fermions and quantum magnetoresistance in LaAgBi${}_2$
• Coexistence of Dirac-Cone States and Superconductivity in Iron Pnictide Ba(Fe${}_{1-x}$Ru${}_x$As)${}_2$
• Evidence for Dirac Nodes from Quantum Oscillations in SrFe${}_2$As${}_2$
• 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)${}_2$
• Ultralow-dissipative conductivity by Dirac fermions in BaFe${}_2$As${}_2$

Cited by in corpus (7)

• Electric Transport of a Single Crystal Iron Chalcogenide FeSe Superconductor: Evidence of Symmetry Breakdown Nematicity and Additional Ultrafast Dirac cone-Like Carriers
• Fermi surface reconstruction and electron dynamics at the charge-density-wave transition in TiSe2
• Robust linear magnetoresistance in WTe2
• Large negative magnetoresistance in BaMn${}_2$Bi${}_2$ antiferromagnet
• Itinerant antiferromagnetic BaMn${}_2$Pn${}_2$'s showing both negative and positive magnetoresistances
• Impact of tiny Fermi pockets with extremely high mobility on the Hall anomaly in the kagome metal CsV${}_3$Sb${}_5$
• Emergence of the minority hole with high mobility on the electrical transport in the Fe-pnictides Ba(Fe${}_{1-x}$Mn${}_x$As)${}_2$