Quantum antidot as a controllable spin injector and spin filter
Mesoscale and Nanoscale Physics
2009-11-10 v2
Abstract
We propose a device based on an antidot embedded in a narrow quantum wire in the edge state regime, that can be used to inject and/or to control spin polarized current. The operational principle of the device is based on the effect of resonant backscattering from one edge state into another through a localized quasi-bound states, combined with the effect of Zeeman splitting of the quasibound states in sufficiently high magnetic field. We outline the device geometry, present detailed quantum-mechanical transport calculation and suggest a possible scheme to test the device performance and functionality.
Cite
@article{arxiv.cond-mat/0404431,
title = {Quantum antidot as a controllable spin injector and spin filter},
author = {I. V. Zozoulenko and M. Evaldsson},
journal= {arXiv preprint arXiv:cond-mat/0404431},
year = {2009}
}