Grigoryan, Vahram and Matos-Abiague, A and Badalyan, Samvel
Spin edge states: An exact solution and oscillations of the
Physical Review B (PRB) 80, pp. 165320-1.
We study the spin edge states, induced by the combined effect of spin-orbit interaction (SOI) and hard-wall confining potential, in a two-dimensional electron system, exposed to a perpendicular magnetic field. We find an exact solution of the problem and show that the spin -resolved edge states are separated in space. The SOI-generated rearrangement of the spectrum results in a peaked behavior of the net-spin current versus the Fermi energy. The predicted oscillations of the spin current with a period, determined by the SOI -renormalized cyclotron energy, can serve as an effective tool for controlling the spin motion in spintronic devices.