Multifold enhancement of the thermoelectric figure of merit in p-type BaBiTe3 by pressure tuning

J. F. Meng, N. V Chandra Shekar, J. V. Badding, D. Y. Chung, Mercouri G Kanatzidis

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Abstract

As in the combinatorial approach to materials discovery, pressure tuning allows the phase space of interaction parameters that determine materials' properties to be explored more rapidly than by traditional means. Both the thermoelectric power and electrical conductivity of BaBiTe3 are found to increase upon compression. As a result there is a dramatic increase in the dimensionless thermoelectric figure of merit ZT from ∼0.1 to ∼0.8. We suggest a mechanism for the enhancement involving an electronic topological transition. Such transitions can be induced both by means of pressure tuning and alloying, offering a potential route to reproducing the pressure induced improved behavior reported here by chemical means.

Original languageEnglish
Pages (from-to)2836-2839
Number of pages4
JournalJournal of Applied Physics
Volume90
Issue number6
DOIs
Publication statusPublished - Sep 15 2001

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

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