Magnetization and spin diffusion of liquid {sup 3}He in aerogel

Journal Article · Fri Jul 01 00:00:00 EDT 2005 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.72.024507· OSTI ID:20719134

Sauls, J A ^[1]; Bunkov, Yu M; Collin, E; Godfrin, H ^[1]; Sharma, P ^[2]

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1. Centre de Recherches sur les Tres Basses Temperatures, Centre National de la Recherche Scientifique, Laboratoire Associe a l'Universite J. Fourier, Boite Postale 166, 38042 Grenoble Cedex 9 (France)
2. Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208 (United States)

We report theoretical calculations and experimental measurements of the normal-state spin diffusion coefficient of {sup 3}He in aerogel, including both elastic and inelastic scattering of {sup 3}He quasiparticles, and compare these results with data for {sup 3}He 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 in the same aerogel samples provide a test of the theory of pairbreaking and magnetic response of low-energy excitations in the 'dirty' B phase of {sup 3}He 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.

• OSTI ID: 20719134
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 2 Vol. 72; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPARATIVE EVALUATIONS
DENSITY
DIFFUSION
ELECTRON CORRELATION
EXCITATION
FERMI GAS
GELS
HELIUM 3
INELASTIC SCATTERING
LIQUIDS
MAGNETIZATION
MEAN FREE PATH
POROUS MATERIALS
QUASI PARTICLES
SILICA
SPIN
SUPERFLUIDITY
TRANSITION TEMPERATURE