Observation of a novel magnetic transport effect: Magnetization transfer via a combination of spin diffusion and quantum solid diffusion

R. W. Singerman; F. W. Van Keuls; R. C. Richardson

doi:10.1103/PhysRevLett.72.2789

Observation of a novel magnetic transport effect: Magnetization transfer via a combination of spin diffusion and quantum solid diffusion

R. W. Singerman, F. W. Van Keuls, and R. C. Richardson

Phys. Rev. Lett. 72, 2789 – Published 25 April 1994

Abstract

Using NMR, we are studying a system in which spin diffusion, quantum solid particle diffusion, and quantum driven surface-substrate coupling contribute to magnetization transfer across a finite distance. In a mixture of polystyrene microspheres, Teflon microspheres, and a solid ${}^{3}{He}$ layer, we observe magnetization transport from ${}^{1}H$ through ${}^{3}{He}$ to ${}^{19}F$ nuclear Zeeman reservoirs. Experiments are conducted between 125 and 750 mK, in magnetic fields of 0.15 and 0.25 T, and over a wide range of ${}^{3}{He}$ coverages.