Quantum splitter controlled by Rashba spin-orbit interaction

Details Quantum splitter controlled by Rashba spin-orbit interaction Quantum splitter controlled by Rashba spin-orbit interaction

2005-10-04

arxiv.org/abs/cond-mat/0510069v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

13 pages, 5 figures

Scientific paper

10.1103/PhysRevB.72.235316

We propose the mesoscopic device based on the Rashba spin orbit interaction (SOI) that contains a gated ballistic Aharonov-Bohm (AB) ring with incoming lead and two asymmetrically situated outgoing leads. The variations of the Rashba coupling parameter induced by the gate voltage applied to the AB ring is shown to cause the redistribution of the carrier flux between the outgoing leads and spin polarization of the outgoing currents, thus allowing the system to manifest the properties of the quantum splitter and spin filter.

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