Imaginary squashing mode spectroscopy of helium three B

J. P. Davis*, H. Choi, J. Pollanen, W. P. Halperin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We have made precision measurements of the frequency of a collective mode of the superfluid 3He-B order parameter, the J = 2 - imaginary squashing mode. Measurements were performed at multiple pressures using interference of transverse sound in an acoustic cavity. Transverse waves propagate in the vicinity of this order parameter mode owing to off-resonant coupling. At the crossing of the sound mode and the order parameter mode, the sound wave is strongly attenuated. We use both velocity and attenuation measurements to determine precise values of the mode frequency with a resolution between 0.1% and 0.25%.

Original languageEnglish (US)
Pages (from-to)501-505
Number of pages5
JournalJournal of Low Temperature Physics
Issue number5-6
StatePublished - Sep 2007


  • 43.20.Ks
  • 43.35.Lq
  • 67.57.-z
  • 67.57.Jj

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Imaginary squashing mode spectroscopy of helium three B'. Together they form a unique fingerprint.

Cite this