Programme

O.34 -- Oral, VCTP-50

Date: Thursday, 7 August 2025

Time: 16:25 - 16:50

SPIN FILTERING IN RING CONDUCTORS BY ELECTROMAGNETIC DRESSING

D.T. Nguyen (1,2), R.G. Nazmitdinov (1,3), M. Pudlak (4)

(1) Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia; (2) Institute of Physics, Viet Nam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi 1000, Viet Nam; (3) Faculty of Natural and Engineering Science, Dubna State University, 141982 Dubna, Russia; (4) Institute of Experimental Physics, Slovak Academy of Sciences, 040 01 Kosice, Slovakia

Transport of ballistic electrons through a 1D-dimensional quantum ring (subjected to Rashba spin—orbit interaction), connected with two external leads, is studied in the presence of external fields. These fields include the optical radiation, produced by an off-resonant high-frequency electric field, and a perpendicular magnetic field. With the aid of the Floquet theory, the key role of the interplay between the optical radiation intensity and the Rashba interaction is established for spin filtering effect of an initially arbitrary polarized electron beam at zero and low magnetic fields.

Presenter: Nguyen Danh Tung