Thermal conductivity of Bi/Sb superlattice

D. W. Song*, G. Chen, S. Cho, Y. Kim, J. B. Ketterson

*Corresponding author for this work

Research output: Contribution to journalConference article

Abstract

The temperature-dependent cross-plane thermal conductivity of a 1-μm thick 50Å Bi / 50Å Sb superlattice on a (111) CdTe substrate was measured, using a differential 3-ω method. This method uses the temperature difference between the superlattice sample and a reference sample to calculate its cross-plane thermal conductivity. However, the substrate thermal conductivity is comparable to or smaller than the superlattice thermal conductivity near room temperature. This results in a very small or negative temperature difference, making the existing data reduction method inapplicable. Based on an improved model, the temperature-dependent thermal conductivity of the Bi/Sb superlattice is obtained and is about half of the literature value of Bi 0.5 Sb 0.5 bulk alloy.

Original languageEnglish (US)
JournalProceedings - IEEE International Symposium on Circuits and Systems
Volume4
StatePublished - Jan 1 2001
EventIEEE International Symposium on Circuits and Systems (ISCAS 2001) - Sydney, NSW, Australia
Duration: May 6 2001May 9 2001

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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