High-resolution nuclear magnetic resonance of superfluid B3

J. B. Kycia*, T. M. Haard, M. R. Rand, H. H. Hensley, G. F. Moores, Y. Lee, P. J. Hamot, D. T. Sprague, W. P. Halperin, E. V. Thuneberg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

High-resolution nuclear magnetic resonance measurements of bulk superfluid B3 have been performed at temperatures above 0.5 mK and at pressures from 0.3 to 21.7 bars. We have found that the resonance frequency is shifted from the Larmor frequency of the normal fluid. According to the theory of Greaves the shift at the superfluid transition determines a specific combination, β345, of the 5 fourth-order coefficients of the order parameter invariants used in the Ginzburg-Landau description of superfluid He3. We found that β345 approaches the weak coupling limit at low pressure, and decreases at higher pressures qualitatively consistent with the theory of Sauls and Serene but in disagreement with the results of Tang et al.

Original languageEnglish (US)
Pages (from-to)864-867
Number of pages4
JournalPhysical review letters
Volume72
Issue number6
DOIs
StatePublished - 1994

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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