  The influence of an external oscillating in time magnetic field on the
dynamics of the Davydov's soliton is investigated. It is shown that it
essentially depends not only on the amplitude and frequency of the magnetic
field, but also on the field orientation with respect to the molecular chain
axis. The soliton velocity and phase are calculated. They are oscillating in
time functions with the frequency of the main harmonic, given by the external
field frequency, and higher multiple harmonics. It is concluded that such
complex effects of external time-depending magnetic fields on the dynamics of
solitons modify the charge transport in low-dimensional molecular systems,
which can affect functioning of the devices based on such systems. These
results suggest also the physical mechanism of therapeutic effects of
oscillating magnetic fields, based on the field influence on the dynamics of
solitons which provide charge transport through biological macro-molecules in
the redox processes.
