Sound Modes of Superfluid 3He in Aerogel

D. A. Geller, A. Golov, N. Mulders, M. H.W. Chan, J. M. Parpia

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


We present the results of experiments on sound propagation at audio frequencies in 3He-filled aerogel. Sound modes were observed at temperatures of 0.8-100 mK in an aerogel sample of 98% porosity. We find that below Tc for superfluid 3He in the aerogel matrix the speed of sound in the composite system increases by as much as 1.5%. Also below the aerogel Tc new modes appear which correspond to propagation speeds of up to ∼10 m/s.

Original languageEnglish (US)
Pages (from-to)339-344
Number of pages6
JournalJournal of Low Temperature Physics
Issue number3-4
StatePublished - Jan 1 1998

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics


Dive into the research topics of 'Sound Modes of Superfluid 3He in Aerogel'. Together they form a unique fingerprint.

Cite this