Spin-dependent transport in multi-terminal Aharonov-Casher ring with quantum dot

Taku Matsunaga, Rui Sakano, Mikio Eto

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


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.

Original languageEnglish
Article number012059
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2017 Aug 15
Event33rd International Conference on the Physics of Semiconductors, ICPS 2016 - Beijing, China
Duration: 2016 Jul 312016 Aug 5

ASJC Scopus subject areas

  • General Physics and Astronomy


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