Enhanced thermoelectric power in ultrathin topological insulators with magnetic doping

Muhammad Tahir; Aurelien Manchon; Udo Schwingenschlögl

doi:10.1063/1.4894283

Enhanced thermoelectric power in ultrathin topological insulators with magnetic doping

Muhammad Tahir, Aurelien Manchon, Udo Schwingenschlögl

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Abstract

We derive analytical expressions for the magnetic moment and orbital magnetization as well as for the corresponding thermal conductivity and thermoelectric power of a topological insulator film. We demonstrate enhancement of the thermoelectric transport for decreasing film thickness and for application of an exchange field due to the tunable band gap. Combining hybridization and exchange field is particularly suitable for heat to electric energy conversion and thermoelectric cooling.

Original language	English (US)
Pages (from-to)	093708
Journal	Journal of Applied Physics
Volume	116
Issue number	9
DOIs	https://doi.org/10.1063/1.4894283
State	Published - Sep 7 2014

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abstract = "We derive analytical expressions for the magnetic moment and orbital magnetization as well as for the corresponding thermal conductivity and thermoelectric power of a topological insulator film. We demonstrate enhancement of the thermoelectric transport for decreasing film thickness and for application of an exchange field due to the tunable band gap. Combining hybridization and exchange field is particularly suitable for heat to electric energy conversion and thermoelectric cooling.",

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AB - We derive analytical expressions for the magnetic moment and orbital magnetization as well as for the corresponding thermal conductivity and thermoelectric power of a topological insulator film. We demonstrate enhancement of the thermoelectric transport for decreasing film thickness and for application of an exchange field due to the tunable band gap. Combining hybridization and exchange field is particularly suitable for heat to electric energy conversion and thermoelectric cooling.

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Enhanced thermoelectric power in ultrathin topological insulators with magnetic doping

Abstract

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