Abstract
We study the resistivity of three-dimensional semimetals with linear dispersion in the presence of on-site electron-electron interaction. The well-known quadratic temperature dependence of the resistivity of conventional metals is turned into an unusual behavior. An analogous change affects the thermal transport, preserving the linearity in of the ratio between thermal and electrical conductivities. These results hold from weak coupling up to the nonperturbative region of the Mott transition. Our findings yield a natural explanation for the hitherto not understood large exponents characterizing the temperature dependence of transport experiments on various topological semimetals.
- Received 18 December 2020
- Accepted 16 April 2021
DOI:https://doi.org/10.1103/PhysRevLett.126.206601
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