  Ground state structures of finite, cylindrically confined two-dimensional
Yukawa systems composed of charged superparamagnetic dust grains in an external
magnetic field are investigated numerically, using molecular dynamic
simulations and lattice summation methods. The ground state configuration of
the system is identified using, as an approximation, the experimentally
obtained shape of the horizontal confinement potential in a classical single
layer dusty plasma experiment with non-magnetic grains. Results are presented
for the dependence of the number density and lattice parameters of the dust
layer on (1) the ratio of the magnetic dipole-dipole force to electrostatic
force between the grains and (2) the orientation of the grain magnetic moment
with respect to the layer.
