  The effect of in-plane electric field on Landau level spacing, spin splitting
energy, average spin polarization and average spin current in the bulk as well
as at the edges of a two-dimensional electron system with Rashba spin-orbit
coupling are presented here. The spin splitting energy for a particular
magnetic field is found to be reduced by the external in-plane electric field.
Unlike the case of a two-dimensional electron system without Rashba spin-orbit
interaction, here the Landau level spacing is electric field dependent. This
dependency becomes stronger at the edges in comparison to the bulk. The average
spin polarization vector rotates anti-clockwise with the increase of electric
field. The average spin current also gets influenced significantly by the
application of the in-plane electric field.
