  We investigate via Molecular Dynamics simulations the propagation of solitons
in a two-dimensional many-body system characterized by Yukawa interaction
potential. The solitons are created in an equilibrated system by the
application of electric field pulses. Such pulses generate pairs of solitons,
which are characterized by a positive and negative density peak, respectively,
and which propagate into opposite directions. At small perturbation, the
features propagate with the longitudinal sound speed, form which an increasing
deviation is found at higher density perturbations. An external magnetic field
is found to block the propagation of the solitons, which can, however, be
released upon the termination of the magnetic field and can propagate further
into directions that depend on the time of trapping and the magnetic field
strength.
