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arXiv · 1705.01976

Phonon limited thermoelectric transport in Pb

Florian Rittweger·Nicki Frank Hinsche·Ingrid Mertig
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Abstract

We present a fully ab initio based scheme to compute transport properties, i.e. the electrical conductivity σ and thermopower S, in the presence of electron-phonon interaction. Therefore, we explicitly investigate the k-dependent structure of the Eliashberg spectral function , the coupling strength, the linewidth and the relaxation time τ. We obtain a state-dependent τ and show its necessity to reproduce the increased thermopower at temperatures below the Debye temperature, without accounting for the phonon-drag effect. Despite the detailed investigations of various k and q dependencies, the presented scheme can be easily applied to more complicated systems.

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Florian Rittweger, Nicki Frank Hinsche, Ingrid Mertig. 2017-05-15. Phonon limited thermoelectric transport in Pb. https://doi.org/10.1088/1361-648x%2Faa7b56

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