Sound Propagation and Transport Properties of Liquid $^3$He in Aerogel
arXiv:cond-mat/9710001 · doi:10.1023/A:1022554732174
Abstract
Superfluid $^3$He confined in aerogel offers a unique chance to study the effects of a short mean free path on the properties of a well defined superfluid Fermi liquid with anisotropic pairing. Transport coefficients and collective excitations, e.g. longitudinal sound, are expected to react sensitively to a short mean free path and to offer the possibility for testing recently developed models for quasiparticle scattering at aerogel strands. Sound experiments, together with a theoretical analysis based on Fermi liquid theory for systems with short mean free paths, should give valuable insights into the interaction between superfluid $^3$He and aerogel.
7 pages in Latex (JLTP style) with 4 figures (postscript). To appear in Journ. Low Temp. Phys. (Proc. of QFS97, Paris)