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Phys. Rev. Lett. 75, 661–664 (1995)

Homogeneous Equal-Spin Pairing Superfluid State of 3He in Aerogel

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D. T. Sprague, T. M. Haard, J. B. Kycia, M. R. Rand, Y. Lee, P. J. Hamot, and W. P. Halperin
Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208

Received 21 April 1995; published in the issue dated 24 July 1995

Pulsed nuclear magnetic resonance measurements of the transverse frequency and magnetization of superfluid 3He in a 98.2% porous aerogel are observed at temperatures reduced significantly below the bulk 3He superfluid transition and are discussed in terms of an isotropic impurity scattering model. Magnetization measurements suggest an equal-spin pairing superfluid. For NMR tipping angles, φ40°, the shifts drop abruptly to zero, unlike the known dependence of either the 3He-A or 3He-B superfluid phases.

© 1995 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.75.661
DOI:
10.1103/PhysRevLett.75.661
PACS:
67.57.Fg, 67.57.Lm, 67.57.Pq