Amplification of sound by conduction electrons in a piezoelectric superlattice

J. B. Ketterson*, G. K. Wong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


It is shown that the amplification coefficient of sound with a wave vector corresponding to a Brillouin zone edge of a superlattice structure containing at least one piezoelectric component is resonantly enhanced with respect to other wave vectors in the presence of an electron drift velocity which exceeds the sound velocity.

Original languageEnglish (US)
Pages (from-to)43-45
Number of pages3
JournalApplied Physics Letters
Issue number1
StatePublished - 1983

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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