Acoustic order parameter mode spectroscopy in superfluid 3HeB

W. P. Halperin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


Recent observations of acoustic attenuation and velocity in superfluid 3HeB have revealed two order parameter collective modes of the BW-state. The dependence of the mode frequencies on temperature, pressure and magnetic field is reviewed. Identification of the modes from data is discussed, including possible corrections to weak-coupling predictions suggested by recent theoretical work. These modes can be conveniently viewed as Cooper-pair excited states classified according to total angular momentum. Measurements of the lifetime of these states is presented with a comparison to theory.

Original languageEnglish (US)
Pages (from-to)1596-1605
Number of pages10
JournalPhysica B+C
Issue numberC
StatePublished - Jul 1982

ASJC Scopus subject areas

  • General Engineering


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