Measurements of high-frequency sound propagation in He3-B

D. B. Mast; Bimal K. Sarma; J. R. Owers-Bradley; I. D. Calder; John B Ketterson; William P Halperin

doi:10.1103/PhysRevLett.45.266

Measurements of high-frequency sound propagation in He3-B

D. B. Mast^*, Bimal K. Sarma, J. R. Owers-Bradley, I. D. Calder, John B Ketterson, William P Halperin

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

Measurements of the attenuation and velocity of pulsed high-frequency sound have been performed up to 133 MHz in superfluid He3-B. A new collective mode of the order parameter was discovered at a frequency extrapolated to Tc of =(1.165+0.05)BCS(Tc), where BCS(T) is the energy gap in the weak-coupling BCS theory. The group velocity has been observed to decrease by as much as 23 of the zero-sound velocity.

Original language	English (US)
Pages (from-to)	266-269
Number of pages	4
Journal	Physical Review Letters
Volume	45
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.45.266
State	Published - Jan 1 1980

ASJC Scopus subject areas

Physics and Astronomy(all)

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author = "Mast, {D. B.} and Sarma, {Bimal K.} and Owers-Bradley, {J. R.} and Calder, {I. D.} and Ketterson, {John B} and Halperin, {William P}",

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AU - Sarma, Bimal K.

AU - Owers-Bradley, J. R.

AU - Calder, I. D.

AU - Ketterson, John B

AU - Halperin, William P

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