CMT131
Anomalous Attenuation of Transverse Sound in 3He
- Author(s):
J.P. Davis, J. Pollanen, H. Choi, J.A. Sauls, W.P. Halperin and A.B. Vorontsov
- Address: Department of Physics & Astronomy, Northwestern University, Evanston, IL 60208
- Date: July 14, 2008
- Journal:
Physical Review Letters 101, 085301 (2008)
[DOI]
[PDF]
- Abstract:
We present the first measurements of the attenuation of transverse sound in superfluid 3He-B. We use fixed path length
interferometry combined with the magneto-acoustic Faraday effect to vary the effective path length by a factor of two,
resulting in absolute values of the attenuation. We find that attenuation is significantly larger than expected from the
theoretical dispersion relation, in contrast to the phase velocity of transverse sound. We suggest that the anomalous attenuation
can be explained by surface Andreev bound states.
- Comment: 4 pages with 5 figures
- Eprint:
[PDF]
[arXiv]
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