Dresden 2026 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 31: Transport in Materials: Diffusion, Charge, or Heat Conduction II

MM 31.9: Talk

Thursday, March 12, 2026, 12:30–12:45, SCH/A216

Coulomb and phonon scattering limited transport in doped systems — •Nakib H. Protik and Dwaipayan Paul — Humboldt-Universität zu Berlin, Berlin, Germany

In this talk we present an extension of the elphbolt [1] transport code package that includes the Coulomb interactions among the charge carriers. We perform ab initio calculations to study the effect of these interactions on the transport properties of doped systems over a range of temperatures. Specifically, we probe the charge carrier hydrodynamics in these systems and identify the relative roles of the Coulomb and phonon scattering in the realization these transport regimes. We provide a comparison with recent measurements and comment on the violation of the Wiedemann-Franz law.

[1] N. H. Protik, C. Li, M. Pruneda, D. Broido, and P. Ordejón, The elphbolt ab initio solver for the coupled electron-phonon Boltzmann transport equations, npj Computational Materials 8, 28 (2022).

Keywords: Coulomb interactions; Boltzmann transport equation; Hydrodynamics