Chiral Anomaly and Classical Negative Magnetoresistance of Weyl Metals

By D. Son, B. Spivak. 2012

1,005 citations recorded by the source corpus.

We consider the classical magnetoresistance of a Weyl metal in which the electron Fermi surface possesses nonzero fluxes of the Berry curvature. Such a system may exhibit large negative magnetoresistance with unusual anisotropy as a function of the angle between the electric and magnetic fields. In this case the system can support an additional type of plasma wave. These phenomena are consequences of the chiral anomaly in electron transport theory.

Subfields: Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/bd92fba8f3e6f034a1471d445b14a48e60e612a7

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In Atomic and Molecular Physics, and Optics

Citations in the corpus

Weyl and Dirac semimetals in three-dimensional solids (2017, background): “Thus, along the magnetic field direction the conductivity is modified from its zero field value as (Burkov, 2015a; Son and Spivak, 2013) σ(B) = σ0 + e4B2τa 4π4g( F ) .”
Recent developments in transport phenomena in Weyl semimetals (2013, neutral): “Indeed, charge pumping between Weyl nodes of opposite chiralities was recently shown in a purely semiclassical formalism as well, by Son and Spivak [31].”
Notes on Anomaly Induced Transport (2016, background): “The change in the rate of axial charge is then [34, 65]”
Beyond Dirac and Weyl fermions: Unconventional quasiparticles in conventional crystals (2016, background): “For weak magnetic fields, semiclassical considerations (42) suggest that the magnetoresistance in SGs 199 and 214 match that of a double Weyl point (36), although the density of states corresponds to a linear dispersion.”
Fermi-arc diversity on surface terminations of the magnetic Weyl semimetal Co3Sn2S2 (2019, background): “The Berry curvature associated with Weyl and Dirac nodes have been shown to result in unique phenomenology, most notably the chiral anomaly in magneto-transport (9-11) and various non-local transport effects (12, 13).”
Observation of the Chiral-Anomaly-Induced Negative Magnetoresistance in 3D Weyl Semimetal TaAs (2015, methodology): “Then, solving the corresponding Boltzmann equation under the semiclassical approximation gives chiral-anomaly-contributed conductivity as [6]”
Inhomogeneous Weyl and Dirac Semimetals: Transport in Axial Magnetic Fields and Fermi Arc Surface States from Pseudo-Landau Levels (2016, methodology): “For the case when B5 1⁄4 0, it reproduces the chiralanomaly-enhanced magnetoconductivity [86].”
Direct optical detection of Weyl fermion chirality in a topological semimetal (2017, background): “[19] showed that the chiral anomaly contribution σchiral anomaly can be calculated by”
Negative magnetoresistance without well-defined chirality in the Weyl semimetal TaP (2015, neutral): “In WSMs, the chiral anomaly is predicted to lead to a negative magnetoresistance (MR) due to the suppressed backscattering of electrons of opposite chirality 17,18 .”