Anomalous attenuation of transverse sound in He3

J. P. Davis, J. Pollanen, H. Choi, J. A. Sauls, W. P. Halperin, A. B. Vorontsov

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

We present the first measurements of the attenuation of transverse sound in superfluid He3-B. We use fixed path length interferometry combined with the magnetoacoustic Faraday effect to vary the effective path length by a factor of 2, resulting in absolute values of the attenuation. We find that attenuation is significantly larger than expected from the theoretical dispersion relation, in contrast with the phase velocity of transverse sound. We suggest that the anomalous attenuation can be explained by surface Andreev bound states.

Original languageEnglish (US)
Article number085301
JournalPhysical review letters
Volume101
Issue number8
DOIs
StatePublished - Aug 20 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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