Shubnikov-de Haas oscillations in quasi-one-dimensional nanostructures
(carbon nanotubes and quantum channels) are investigated. It is shown
that two types of aperiodic oscillations arise in such systems: oscil
lations involving a change in the strength of the magnetic field, and
oscillations involving a change in the angle of inclination of the fie
ld with respect to the symmetry axis of the system. It is found that t
he monotonic part of the magnetic moment lies in the plane of size con
finement of the system and that the oscillating part has both longitud
inal and transverse components. (C) 1996 American Institute of Physics
.