The Aharonov-Casher (AC) effect is theoretically examined in a mesoscopic ring with an embedded quantum dot in a multi-terminal geometry. We examine a realistic model for such a system with spin-orbit interaction in the ring. A spin-polarized current can be generated in a three-terminal device even in the absence of magnetic field, whereas it cannot in a two-terminal device. The spin polarization is enhanced by the resonant tunneling around the Coulomb peak and Kondo effect in the Coulomb blockade regime. The efficiency for the spin polarization is discussed in realistic devices.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 2017 Aug 15|
|Event||33rd International Conference on the Physics of Semiconductors, ICPS 2016 - Beijing, China|
Duration: 2016 Jul 31 → 2016 Aug 5
ASJC Scopus subject areas
- Physics and Astronomy(all)