  Theoretical calculations predict the dissipationless circulating current
induced by a spin defect in a two-dimensional electron gas with spin-orbit
coupling. The shape and spatial extent of these dissipationless circulating
currents depend dramatically on the relative strengths of spin-orbit fields
with differing spatial symmetry, offering the potential to use an electric gate
to manipulate nanoscale magnetic fields and couple magnetic defects. The
spatial structure of the magnetic field produced by this current is calculated
and provides a direct way to measure the spin-orbit fields of the host, as well
as the defect spin orientation, \textit{e.g.} through scanning nanoscale
magnetometry.
