Remote-control spin filtering through a $T$-type structure

Abstract

We propose a spin filter scheme using a $T$-stub waveguide. By applying a moderate magnetic field at the tip of the sidearm, this device can produce both large electric and spin current. The direction, polarization of the output spin current can be further adjusted electronically by a remote gate which tunes the length of the sidearm. The device is robust against the disorder.

4 pages, 4 figures, to be published in Appl. Phys. Lett

References in corpus (7)

• Spin-dependent quantum transport in periodic magnetic modulations: Aharonov-Bohm ring structure as a spin filter
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Cited by in corpus (3)

• Robust strongly-modulated transmission of a $T$-shaped structure with local Rashba interaction
• Quantum interference hybrid spin-current injector
• Localized states in a semiconductor quantum ring with a tangent wire