  Densities of persistent orbital and spin magnetic moment currents of an
electron in a cylindrical nanolayer in the presence of external axial magnetic
field are considered. For the mentioned current densities analytical
expressions are obtained. The conditions when in the system only spin magnetic
moment current is present are defined. Dependencies of orbital and spin
magnetic moment currents on geometrical parameters of nanolayer are derived. It
is shown that in the case of layered geometry the dependence of spin magnetic
moment current on radial coordinate has a non-monotonic behavior. This is the
peculiarity of layered geometry of nanostructure and it is due to the behavior
of wave function of the system along the radial direction. Dependent on the
directions of the field and orbital rotation of the electron there are defined
values of radial coordinates when the orbital current disappears. The
transition to the case of cylindrical quantum dot is discussed as well.
