We theoretically study the electrical, thermal and thermoelectric transport properties of graphene nanoribbons under torsional deformations. The modelling follows a nonequilibrium Green's function approach in the ballistic transport regime, describing the electrical and phononic properties through \textit{ab-initio} density functional theory and empirical interatomic potentials, respectively. We consider two different types of deformations, a continuous twist of a given angle applied to the nanoribbon, and two consecutive twists applied in opposite angular directions. The numerical results are carefully analysed in terms of spatially-resolved electron eigenchannels, polarization-dependent phonon transmission and thermoelectric figure-of-merit.
@article{arxiv.1704.07103,
title = {Electron and phonon transport in twisted graphene nanoribbons},
author = {Aleandro Antidormi and Miquel Royo and Riccardo Rurali},
journal= {arXiv preprint arXiv:1704.07103},
year = {2017}
}