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arXiv · 2006.13328

Thermoelectric properties of tubular nanowires in the presence of a transverse magnetic field

Hadi Rezaie Heris·Movaffaq Kateb·Sigurdur I. Erlingsson·Andrei Manolescu
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Abstract

We calculate the charge and heat current associate with electrons, generated by a temperature gradient and chemical potential difference between two ends of a tubular nanowire of 30 nm radius in the presence of an external magnetic field perpendicular to its axis. We consider a nanowire based on a semiconductor material, and use the Landauer-Bttiker approach to calculate the transport quantities. We obtain the variation of the Seebeck coefficient ($S$), thermal conductivity kappa, and the figure of merit ($ZT$), with respect to the temperature up to 20\,K, and with the magnetic field up to 3 T. In particular we show that the Seebeck coefficient can change sign in this domain of parameters. In addition $κ$ and $ZT$ have oscillations when the magnetic field increases. These oscillations are determined by the energy spectrum of the electrons.

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Hadi Rezaie Heris, Movaffaq Kateb, Sigurdur I. Erlingsson, Andrei Manolescu. 2020-06-23. Thermoelectric properties of tubular nanowires in the presence of a transverse magnetic field. https://doi.org/10.1088/1361-6528%2Faba02a

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