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

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

2006-10-05

arxiv.org/abs/cond-mat/0610151v2

Appl. Phys. Lett. 90, 142503 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

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

Scientific paper

10.1063/1.2719174

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.

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