Spin Polarization in Quantum Dots by Radiation Field with Circular Polarization
Abstract
For circular quantum dot (QD), taking into account the Razhba spin-orbit interaction (SOI), an exact energy spectrum is obtained. For a small SOI constant, the eigenfunctions of the QD are found. It is shown that the application of a radiation field with circular polarization removes the Kramers degeneracy of the QD eigenstates. Effective spin polarization of electrons transmitted through the QD owing to a radiation field with circular polarization is demonstrated.
- Publication:
-
Soviet Journal of Experimental and Theoretical Physics Letters
- Pub Date:
- May 2001
- DOI:
- 10.1134/1.1387515
- Bibcode:
- 2001JETPL..73..505B
- Keywords:
-
- 73.21.La;
- 71.70.Ej