Effect of localization–delocalization transition on thermoelectric properties of Bi2Te2Se topological insulator

Craco, L. and Leoni, S. ORCID: https://orcid.org/0000-0003-4078-1000 2024. Effect of localization–delocalization transition on thermoelectric properties of Bi2Te2Se topological insulator. APL Energy 2 (1) , 016102. 10.1063/5.0173308

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Abstract

The thermal transport properties of Bi2Te2Se topological insulators show a range of complex features. Large bulk resistivities coexisting with prominent Shubnikov–de Haas quantum oscillations and proximity to metallic states mark this p-band system as an unconventional topological quantum material. Here, using the density functional plus dynamical mean-field theory method, we show how localization–delocalization transition underpins the T-dependence of thermoelectric responses from room down to low temperatures. We present the implications of our many-particle analysis to resistivity, Seebeck coefficient, thermal conductivity, and Lorenz number and propose that related broadband systems close to electronic transitions could be of use in thermoelectrics.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry
ISSN:	2770-9000
Funders:	Leverhulme Trust
Date of First Compliant Deposit:	23 January 2024
Date of Acceptance:	28 December 2023
Last Modified:	24 Jan 2024 16:30
URI:	https://orca.cardiff.ac.uk/id/eprint/165775

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