Asymmetric Spin Accumulation Induced by the Rashba Spin-Orbit Effect in a Domain Wall Inside a Magnetic Nanowire

We have investigated the spin accumulation effect in a Bloch-type magnetic domain wall in the presence of the Rashba spin-orbit interaction. The investigation has been done to study the excess voltage drop due to spin accumulation across the domain wall using the kinetic equation in Wigner space. It has been demonstrated that the Rashba interaction extremely increases the spin accumulation effect in the domain wall which in turn results in up to two orders of magnitude enhancement in the excess voltage drop.