HE-3 IN AEROGEL - AN INHOMOGENEOUSLY DISORDERED UNCONVENTIONAL SUPERFLUID

We have examined the superfluidity of He-3 in 98.2% porous silica aero gel with up to 34% He-4 at 21.6 bar. The mixture is phase-separated fo r He-4 fractions between similar to 11% and 34%. The He-4-rich phase p referentially occupies the regions of highest silica density in the ae rogel, thus modifying the distribution of the correlated disorder seen by superfluid He-3. The He-3 T-c increases slightly with He-4 content while the superfluid fraction decreases rapidly. This behavior is inc onsistent with that of He-3 in a homogeneously scattering medium and i s analogous to that of a. granular superconductor.