Spin Diffusion and Relaxation in a Nonuniform Magnetic Field
arXiv:cond-mat/0408192 · doi:10.1103/PhysRevB.71.184409
Abstract
We consider a quasiclassical model that allows us to simulate the process of spin diffusion and relaxation in the presence of a highly nonuniform magnetic field. The energy of the slow relaxing spins flows to the fast relaxing spins due to the dipole-dipole interaction between the spins. The magnetic field gradient suppresses spin diffusion and increases the overall relaxation time in the system. The results of our numerical simulations are in a good agreement with the available experimental data.
11 pages and 6 figures