Spin filtering through a double-bend structure

Details Spin filtering through a double-bend structure Spin filtering through a double-bend structure

2004-04-26

arxiv.org/abs/cond-mat/0404605v1

Appl. Phys. Lett. 85, 2547 (2004).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 3 figures in eps format

Scientific paper

10.1063/1.1796531

We propose a simple scheme for the spin filter by studying the coherent transport of electrons through a double-bend structure in a quantum wire with a weak lateral magnetic potential which is much weaker than the Fermi energy of the leads. {\em Extremely large} spin polarized current in the order of {\em micro-Ampere} can be obtained because of the strong resonant behavior from the double bends. Further study suggests the roubustness of this spin filter.

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