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arXiv · 1612.08092

Electron transport in nodal-line semimetals

S. V. Syzranov·B. Skinner
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Abstract

We study the electrical conductivity in a nodal-line semimetal with charged impurities. The screening of the Coulomb potential in this system is qualitatively different from what is found in conventional metals or semiconductors, with the screened potential $ϕ$ decaying as $ϕ\propto 1/r^2$ over a wide interval of distances $r$. This unusual screening gives rise to a rich variety of conduction regimes as a function of temperature, doping level and impurity concentration. In particular, nodal-line semimetals exhibit a diverging mobility $\propto 1/|μ|$ in the limit of vanishing chemical potential $μ$, a linearly-increasing dependence of the conductivity on temperature, $σ\propto T$, and a large weak-localization correction with a strongly anisotropic dependence on magnetic field.

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S. V. Syzranov, B. Skinner. 2016-12-23. Electron transport in nodal-line semimetals. https://doi.org/10.1103/physrevb.96.161105

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