Anomalous attenuation of transverse sound in (3)He

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We present the first measurements of the attenuation of transverse sound in superfluid (3)He-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.
Publisher
AMER PHYSICAL SOC
Issue Date
2008-08
Language
English
Article Type
Article
Keywords

ZERO SOUND; SUPERFLUID HE-3-B; TUNNEL-JUNCTIONS; TEMPERATURES; PROPAGATION; DISCOVERY; LIQUID; STATE; HE3

Citation

PHYSICAL REVIEW LETTERS, v.101, no.8

ISSN
0031-9007
DOI
10.1103/PhysRevLett.101.085301
URI
http://hdl.handle.net/10203/89144
Appears in Collection
PH-Journal Papers(저널논문)
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