Compressed Silica Aerogels for the Study of Superfluid 3He
J. Pollanen, H. Choi, J.P. Davis, S. Blinstein, T.M. Lippman, L.B., Lurio, N. Mulders, and W.P. Halperin
TL;DR
This paper investigates how uniaxial strain affects the structure of silica aerogels and how this influences the behavior of superfluid helium-3 within them, using SAXS measurements and modeling.
Contribution
It introduces a model linking SAXS-measured anisotropy in strained aerogels to the quasiparticle mean free path anisotropy in superfluid 3He.
Findings
Strain induces measurable structural anisotropy in aerogels.
The model connects aerogel anisotropy to superfluid quasiparticle behavior.
Results help understand superfluid properties in anisotropic environments.
Abstract
We have performed Small Angle X-ray Scattering (SAXS) on uniaxially strained aerogels and measured the strain-induced structural anisotropy. We use a model to connect our SAXS results to anisotropy of the 3He quasiparticle mean free path in aerogel.
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