Electron transport in nodal-line semimetals
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∝1/r[superscript 2] over a...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2018
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| Online Access: | http://hdl.handle.net/1721.1/113866 https://orcid.org/0000-0003-0774-3563 |
| Summary: | 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∝1/r[superscript 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 ∝1/|μ| in the limit of vanishing chemical potential μ, a linearly increasing dependence of the conductivity on temperature, σ∝T, and a large weak-localization correction with a strongly anisotropic dependence on magnetic field. |
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