ABSTRACT
This chapter discusses the spin waveguide transport of electrons with Rashba spin-orbit interaction (RSOI) in the curved circuits. Since the Datta–Das spin field-effect transistor was proposed, the RSOI has attracted considerable attention on account of its conceivable applications in spintronics. P. Foldi et al. accounted for the spin transformation properties of a quantum ring with RSOI and indicated that it can serve as a one-qubit quantum gate for electron spin. L. A. Shelykh et al. invested a gated ballistic Aharonov–Bohm ring with three asymmetrically situated electrodes and showed that it was able to demonstrate the properties of both the quantum splitter and spin filter. The chapter investigates the electron's movement in every straight segment and every vertex. When every straight segment tends to be infinitely small, the wave function of the Rashba electron passing through a curve can be obtained.
