Observation of a new resonance in the collective-mode spectrum of He3-A

M. W. Meisel*, B. S. Shivaram, Bimal K. Sarma, John B Ketterson, William P Halperin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


A high-resolution acoustic impedance technique has been used to investigate the collective-mode spectrum of He3-A near Tc. A new collective mode of the order parameter has been observed. The temperature at which the new mode appears is frequency, pressure, and magnetic field independent. The observed temperature dependence is very close to the predicted behavior of the super-flapping mode in the weak-coupling limit of the Anderson-Brinkman-Morel energy gap.

Original languageEnglish (US)
Pages (from-to)361-364
Number of pages4
JournalPhysical Review Letters
Issue number5
StatePublished - Jan 1 1983

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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