Holey topological thermoelectrics

O. A. Tretiakov, Ar Abanov, Jairo Sinova

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

We study the thermoelectric properties of three-dimensional topological insulators with many holes (or pores) in the bulk. We show that at high density of these holes, the thermoelectric figure of merit, ZT, can be large due to the contribution of the conducting surfaces and the suppressed phonon thermal conductivity. The maximum efficiency can be tuned by an induced gap in the surface states dispersion through tunneling or external magnetic fields. The large values of ZT, much higher than unity for reasonable parameters, make this system a strong candidate for applications in heat management of nanodevices, especially at low temperatures.

Original languageEnglish
Article number113110
JournalApplied Physics Letters
Volume99
Issue number11
DOIs
Publication statusPublished - 2011 Sep 12

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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