Constructing Spin Interference Devices from Nanometric Rings

Details Constructing Spin Interference Devices from Nanometric Rings Constructing Spin Interference Devices from Nanometric Rings

2007-10-25

arxiv.org/abs/0710.4770v1

Physics

Condensed Matter

Strongly Correlated Electrons

16 pages, 8 figures, submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.76.235120

The study of nanospintronic devices utilizing coherent transport through molecular scale multiply-connected geometries in the presence of moderate magnetic fields is presented. It is shown how two types of simple devices, spin filters and spin splitters (or Stern-Gerlach devices) may be constructed from molecular nanometric rings utilizing the Aharonov-Bohm effect. The current is calculated within a single electron approximation and within a many-body master equation approach where charging effects are accounted for in the Coulomb Blockade regime. We provide rules and tools to develop and analyze efficient spintronic devices based on nanometric interferometers.

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