Direct observation of nuclear spin diffusion in real space.
Images directly visualizing the spatial spin-diffusion process are reported. The measurements were performed using a magnetic resonance force microscope. The field gradient associated with the force-detection experiment is large enough to affect the spin dynamics and a modified kinetics of the spin-diffusion process is observed. The effects of the gradient were compensated for by a pulse scheme and a pure Zeeman diffusion rate constant of D=(6.2+/-0.7)x10{-12} cm{2}/s in CaF2 was observed.
Eberhardt
Kai W
KW
Physical Chemistry, ETH Zurich, CH-8093 Zurich, Switzerland.
Mouaziz
Schahrazede
S
Boero
Giovanni
G
Brugger
Jürgen
J
Meier
Beat H
BH