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arXiv · 1712.07946

BoltzTraP2, a program for interpolating band structures and calculating semi-classical transport coefficients

Georg K. H. Madsen·Jesús Carrete·Matthieu J. Verstraete
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Abstract

BoltzTraP2 is a software package for calculating a smoothed Fourier expression of periodic functions and the Onsager transport coefficients for extended systems using the linearized Boltzmann transport equation. It uses only the band and $k$-dependent quasi-particle energies, as well as the intra-band optical matrix elements and scattering rates, as input. The code can be used via a command-line interface and/or as a Python module. It is tested and illustrated on a simple parabolic band example as well as silicon. The positive Seebeck coefficient of lithium is reproduced in an example of going beyond the constant relaxation time approximation.

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Georg K. H. Madsen, Jesús Carrete, Matthieu J. Verstraete. 2017-12-21. BoltzTraP2, a program for interpolating band structures and calculating semi-classical transport coefficients. https://doi.org/10.1016/j.cpc.2018.05.010

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