SPIN DIffUSION IN LIQUID 3HE CONfiNED IN PLANAR AEROGEL

3He in Aerogel

G. Lawes,1 S. C. J. Kingsley,1,* N. Mulders,2 and J. M. Parpia1 1Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 2Department of Physics and Astronomy, University of Delaware, Newark, Delaware (Received 15 December 1999) We have investigated the superfluid transition of 3He in different samples of silica aerogel. By comparing new measurements on a 99.5% sample ...

’Fast Exchange’ model visualized with 3He confined in aerogel: a Fermi liquid in contact with a Ferromagnetic solid

SPATIAL CORRELATIONS IN SPIN-POLARIZED 3He LIQUID

Variational Fermi HNC calculations are performed for spin-polarized 3 ~ e liquid at zero temperature. The trial wave function is optimized by solving an Euler-Lagrange equation in the Fermi HNC approximation. Results for liquid structure function and one-particle momentum distribution are compared with the corresponding quantities of the spin-saturated liquid. In this report we present results ...

Heat capacity of 3He in aerogel.

The heat capacity of pure 3He in low density aerogel is measured at 22.5 bars. The superfluid response is simultaneously monitored with a torsional oscillator. A slightly rounded heat capacity peak, 65 microK in width, is observed at the 3He-aerogel superfluid transition, T(ca). Subtracting the bulk 3He contribution, the heat capacity shows a Fermi-liquid form above T(ca). We can fit the heat c...

Acoustic Spectroscopy of Superfluid 3He in Aerogel

N. Mulders Department of Physics and Astronomy, University of Delaware, 223 Sharp Laboratory, Newark, Delaware 19716 (Received 21 December 1998) Liquid 3He in 98%-porous aerogel simultaneously possesses properties of a disordered p-wave superfluid and an elastic solid. We have observed two sound modes of superfluid 3He in aerogel. The first (fast) sound is a compression wave, and the second (sl...