Spin filtering through a double-bend structure
Q. W. Shi, J. Zhou, M. W. Wu
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. Extremely large spin polarized current in the order of 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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