Spin Interference Effects in a Ring with Rashba Spin-Orbit Interaction Subject to Strong Light-Matter Coupling in Magnetic Field

Electron transport through a one-dimensional quantum ring, subjected to Rashba spin-orbit interaction and connected with two external leads, is studied in the presence of external fields. They include the optical radiation, produced by an off-resonant high-frequency electric field, and a perpendicular magnetic field. By means of the Floquet theory of periodically driven quantum systems the interference effects under these fields are described in detail. It is found analytically the specific conditions to reach the spin-filtering effect, caused by the interplay of the external fields and Rashba spin-orbit interaction.

Automated summary

This paper investigates electron transport through a one-dimensional quantum ring in the presence of external fields. The effects of optical radiation produced by a high-frequency electric field and a perpendicular magnetic field are described using the Floquet theory. The specific conditions for achieving the spin-filtering effect caused by the interplay of the external fields and Rashba spin-orbit interaction are found analytically.