Charge and heat currents in prismatic tubular nanowires

TL;DR

This paper investigates charge and heat transport in prismatic tubular nanowires with polygonal cross sections, focusing on how shape and shell thickness affect conduction properties using a non-linear Landauer-Büttiker approach.

Contribution

It introduces a detailed analysis of how geometric factors influence electronic and thermal transport in core-shell nanowires beyond linear response.

Findings

Shape and shell thickness significantly affect conduction.

Non-linear effects are important in transport calculations.

Transport properties depend on the nanowire's cross-sectional geometry.

Abstract

We calculate electronic charge and heat transport in tubular nanowires generated by a temperature gradient or a chemical potential bias. These nanowires correspond to semiconductor core-shell nanowires with insulating (undoped) core and conductive (doped) shell, such that the conduction takes place only in the shell. The cross section of such nanowires is typically polygonal. We study the influence of the cross section shape and shell thickness on the electric and heat conduction of the shell. We use the Landauer-B\"uttiker approach to calculate the electric and heat currents as a non-linear function of temperature and chemical potential bias beyond the linear regime.