Title

Viscosity of highly polarized very dilute He-3-He-4 mixtures

Publication Date

2002

Comments

Published version located at http://eproceedings.worldscinet.com/9789812777805/9789812777805_0051.html

Abstract

We present vibrating - wire viscosity measurements on a very dilute 3He-4He mixture (X3 = 150 ppm) in fields up to 14.8 T and temperatures down to 3 mK. The 3He spin polarization is greater than 99% for the highest field and lowest temperature used. In these conditions, the s-wave scattering rate decreases due to a lack of quasiparticles with the minority spin state. This enhances all transport coefficients including the viscosity. At the lowest temperature, the hydrodynamic damping of the viscometer in a 14.8 T field was more than 10 times larger than in low fields. This indicates a many-fold increase in the mixture viscosity due to spin polarization.

Pages

3117-3122

Volume

16

Issue

20-22

Journal Title

INTERNATIONAL JOURNAL OF MODERN PHYSICS B