Magnetization and spin diffusion of liquid {sup 3}He in aerogel
- 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)
- 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, Vol. 72, Issue 2; Other Information: DOI: 10.1103/PhysRevB.72.024507; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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