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Magnetization and Spin-Diffusion of Liquid 3He in Aerogel

J. A. Sauls·Yu. M. Bunkov·E. Collin·H. Godfrin·P. Sharma
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Abstract

We report theoretical calculations of the normal-state spin diffusion coefficient of 3He in aerogel, including both elastic and inelastic scattering of 3He quasiparticles, and compare these results with experimental data for 3He in 98% porous silica aerogel. This analysis provides a determination of the elastic mean free path within the aerogel. Measurements of the magnetization of the superfluid phase provide a test of the theory of pairbreaking and magnetic response of low-energy excitations in the ``dirty'' B-phase of 3He in aerogel. A consistent interpretation of the data for the spin-diffusion coefficient, magnetization and superfluid transition temperature is obtained by including correlation effects in the aerogel density.

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J. A. Sauls, Yu. M. Bunkov, E. Collin, H. Godfrin, P. Sharma. 2004-08-23. Magnetization and Spin-Diffusion of Liquid 3He in Aerogel. https://doi.org/10.1103/physrevb.72.024507

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