2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/21950It is shown that in a heterostructure where screening is eliminated, the Ampére-Maxwell law of electrodynamics implies that a dc or ac spinomotive force can be inudced with a time rate of change of a transverse electric field, and the magnetic analog of Ampére law implies that a dc or ac spin current can generate a transverse electric field at the same frequency outside the spin-current channel. Both effects are quite weak but may be of some usefulness.4 pages, 1 figureMaterials Sciencetext