Linear magnetoconductivity in multiband spin-density-wave metals with nonideal nesting

Abstract

In several parent iron-pnictide compounds the resistivity has an extended range of linear magnetic field dependence. We argue that there is a simple and natural explanation of this behavior. Spin density wave transition leads to Fermi-surface reconstruction corresponding to strong modification of the electronic spectrum near the nesting points. It is difficult for quasiparticles to pass through these points during their orbital motion in magnetic field, because they must turn sharply. As the area of the Fermi surface affected by the nesting points increases proportionally to magnetic field, this mechanism leads to the linear magnetoresistance. The crossover between the quadratic and linear regimes takes place at the field scale set by the SDW gap and scattering rate.

5 pages, 2 figures, accepted to Phys. Rev. B, Rapid Communications

References in corpus (5)

• Superconductivity and spin-density-waves in multi-band metals
• Electronic reconstruction through the structural and magnetic transitions in detwinned NaFeAs
• Manifestations of multiple-carrier charge transport in the magnetostructurally ordered phase of undoped BaFe${}_2$As${}_2$
• Breakdown of weak-field magnetotransport at a metallic quantum critical point
• Large linear magnetoresistance and magnetothermopower in layered SrZnSb${}_2$

Cited by in corpus (15)

• Magnetoresistance near a quantum critical point
• Correlation between scale-invariant normal state resistivity and superconductivity in an electron-doped cuprate
• Low temperature $T$-linear resistivity due to umklapp scattering from a critical mode
• Magnetoresistance scaling, disorder, `hot spots' and the origin of $T$-linear resistivity in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• $B^2$ to $B$-linear magnetoresistance due to impeded orbital motion
• Magnetotransport of multiple-band nearly-antiferromagnetic metals due to "hot-spot" scattering
• Kondo-like mass enhancement of Dirac fermion in iron pnictides Ba(Fe${}_{1-x}$Mn${}_x$As)${}_2$
• Origin of anomalous magnetotransport in kagome superconductors AV${}_3$Sb${}_5$ (A=K,Rb,Cs)
• Theory of anomalous magnetotransport from mass anisotropy
• Linear Magnetoresistance from Glassy Orders
• Quantum interference in superposed lattices
• Magnetotransport studies of optimally doped Sr(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Interrupted orbital motion in density-wave systems
• Fermi surface origin of the low-temperature magnetoresistance anomaly
• $H$-linear magnetoresistance in NbSe${}_2$ due to impeded cyclotron motion