Thermoelectric figure of merit of superlattices

J. O. Sofo, G. D. Mahan

Research output: Contribution to journalArticlepeer-review

138 Scopus citations

Abstract

We calculate the electrical conductivity, thermopower, and the electronic contribution to the thermal conductivity of a superlattice, with the electric field and the thermal gradient applied parallel to the interfaces. We include the tunneling between quantum wells. The broadening of the lowest subband when the period of the superlattice is decreased produces a reduction of the thermoelectric figure of merit. However, we found that a moderate increase of the figure of merit may be expected for intermediate values of the period, due to the enhancement of the density of states produced by the superlattice structure.

Original languageEnglish (US)
Pages (from-to)2690-2692
Number of pages3
JournalApplied Physics Letters
Volume65
Issue number21
DOIs
StatePublished - 1994

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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