Superconducting Al-PbBi Tunnel Junction as a Phonon Spectrometer

20 March 1978

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 40 (12) , 786-789
https://doi.org/10.1103/physrevlett.40.786

Abstract

Phonons incident on an Al-PbBi tunnel junction were found to be detectable only if their frequency exceeds a voltage-tunable threshold. Modulating this threshold yielded a phonon spectrometer with a resolution of 10 GHz at a phonon power of

10^{- 6}

W and a frequency range from 100 GHz up to several hundred GHz.

Keywords

QUANTUM MECHANICS

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