Work

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

Year: 2020

Type: article

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-Büttiker approach to calculate the transport quantities. We obtain the variation of the Seebeck coefficient ( S ), thermal conductivity ( κ ), 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.

Source: Nanotechnology

DOI: 10.1088/1361-6528/aba02a

Authors: Hadi Rezaie Heris, Movaffaq Kateb, Sigurdur I Erlingsson, Andrei Manolescu

Institution: Reykjavík University

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funder: Icelandic Centre for Research

Award: G3352149358