Publication Date

2003

Comments

This is the pre-published version which is collected from arXiv. The published version is at http://prl.aps.org/abstract/PRL/v90/i10/e105301

Abstract

Spin-echo experiments are reported for 3He-4He solutions under extremely high B/T conditions, B=14.75  T and T≥1.73  mK. The 3He concentration x3 was adjusted close to the value xc≈3.8% at which the spin-rotation parameter μM0 vanishes. In this way the transverse and longitudinal spin-diffusion coefficients D⊥,D∥ were measured while keeping |μM0|<1. It is found that the temperature dependence of D⊥ deviates strongly from 1/T2, with anisotropy temperature Ta=4.26-0.44+0.18  mK. This value is close to the theoretical prediction for dilute solutions and suggests that spin current relaxation remains finite as the temperature tends to zero.

Pages

-

Volume

90

Issue

10

Journal Title

PHYSICAL REVIEW LETTERS



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