Email this article Spin-polarized currents in a two-terminal quantum ring with spin–orbit interaction
- Authors: Grigor’kin A.A.1, Dunaevskii S.M.1,2,3
-
Affiliations:
- B.P. Konstantinov Petersburg Nuclear Physics Institute
- Peter the Great PolytechnicUniversity, B.P. Konstantinov Petersburg Nuclear Physics Institute
- St. Petersburg State Electrotechnical University “LETI,”
- Issue: Vol 58, No 10 (2016)
- Pages: 2088-2094
- Section: Low-Dimensional Systems
- URL: https://bakhtiniada.ru/1063-7834/article/view/198910
- DOI: https://doi.org/10.1134/S1063783416100176
- ID: 198910
Cite item
Open Access
Access granted
Subscription Access
Abstract
Photoinduced spin current is calculated in a system consisting of a 1D quantum ring with conductors connected to it. It is shown that in the presence of Rashba’s spin–orbit interaction, a current is induced in the ring by circularly polarized radiation. Expressions are derived for the current and electron transmission coefficients taking into account the inelastic interaction with the radiation. It is shown that the spin current is a complex function of the magnetic flux through the ring, radiation frequency, and the spin–orbit coupling constant. In the presence of a potential difference, the interaction with radiation may considerably increase the efficiency of the quantum-ring-based spin filter.
About the authors
A. A. Grigor’kin
B.P. Konstantinov Petersburg Nuclear Physics Institute
Email: smd2000@mail.ru
Russian Federation, Leningrad district, 188300
S. M. Dunaevskii
B.P. Konstantinov Petersburg Nuclear Physics Institute; Peter the Great PolytechnicUniversity, B.P. Konstantinov Petersburg Nuclear Physics Institute; St. Petersburg State Electrotechnical University “LETI,”
Author for correspondence.
Email: smd2000@mail.ru
Russian Federation, Leningrad district, 188300; St. Petersburg, 195251; ul. Professora Popova 5, St. Petersburg, 197022
Supplementary files
