Models for Superfluid $^3$He in Aerogel
E.V. Thuneberg (Helsinki University of Technology), S.K. Yip, (Northwestern University), M. Fogelstr\"om ({\AA}bo Akademi), J.A. Sauls, (Northwestern University)
TL;DR
This paper presents a simple model explaining superfluid 3He in aerogel by accounting for inhomogeneous quasiparticle scattering, aligning well with recent experimental observations.
Contribution
It introduces a model that incorporates strong inhomogeneity in scattering to explain superfluid 3He behavior in aerogel.
Findings
Quantitative agreement with experimental data
Inhomogeneous scattering on 100 nm scale is crucial
Model simplifies understanding of superfluid in porous media
Abstract
Several recent experiments find evidence of superfluidity of 3He in 98%-porous aerogel. The primary effect of the aerogel is that it scatters the quasiparticles of 3He. We find that many experimental findings are quantitatively understood by a relatively simple model that takes into account strong inhomogeneity of the scattering on a length scale of 100 nm.
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