A. Gupta, R. Gross, et al.
SPIE Advances in Semiconductors and Superconductors 1990
Spin diffusion driven by either a magnetization gradient or a field gradient is viewed as a flow of magnetization current. An expression for this current in a nonuniform field is derived. The magnetization current is the vehicle for a cross relaxation between the nuclear dipole-dipole energy and the spin energy of interaction with the inhomogeneous part of the magnetic field. From a measurement of the decay rate of dipole energy in the presence of large field gradients, which are present in type-II superconductors or at normal-superconductor interfaces, the spin-diffusion coefficient can be determined. Coupled differential equations describing magnetization and dipole energy densities are deduced and their solution is discussed. © 1975 The American Physical Society.
A. Gupta, R. Gross, et al.
SPIE Advances in Semiconductors and Superconductors 1990
Mark W. Dowley
Solid State Communications
John G. Long, Peter C. Searson, et al.
JES
R. Ghez, M.B. Small
JES