  Experimental attempts to realize spin-devices based on concepts derived from
single-particle theoretical approaches have not been very successful yet. This
raises the fundamental question of whether inter-electron interactions can be
neglected in planar electron-based spintronics devices. We report on our
results of a many-body approach to the spin configuration in a quantum Hall
state in the presence of Bychkov-Rashba type spin-orbit interaction. While some
properties of this system are found to be ideally suited for exploitation in
spin devices, others might seem to limit its applicability. The latter can
however be optimized for device performance.
