Spin filtering through a double-bend structure
arXiv:cond-mat/0404605 · doi:10.1063/1.1796531
Abstract
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.
3 pages, 3 figures in eps format