Measurements of high-frequency sound propagation in He3-B

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

^*Corresponding author for this work

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

69 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 - 1980

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.45.266

Cite this

@article{6ccbca7d816844458785880a53e0390d,

title = "Measurements of high-frequency sound propagation in He3-B",

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.",

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

year = "1980",

doi = "10.1103/PhysRevLett.45.266",

language = "English (US)",

volume = "45",

pages = "266--269",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "4",

}

TY - JOUR

T1 - Measurements of high-frequency sound propagation in He3-B

AU - Mast, D. B.

AU - Sarma, Bimal K.

AU - Owers-Bradley, J. R.

AU - Calder, I. D.

AU - Ketterson, J. B.

AU - Halperin, W. P.

PY - 1980

Y1 - 1980

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=4243397711&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4243397711&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.45.266

DO - 10.1103/PhysRevLett.45.266

M3 - Article

AN - SCOPUS:4243397711

SN - 0031-9007

VL - 45

SP - 266

EP - 269

JO - Physical review letters

JF - Physical review letters

IS - 4

ER -

Measurements of high-frequency sound propagation in He3-B

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this