Film Edge Nonlocal Spin Valves

Details Film Edge Nonlocal Spin Valves Film Edge Nonlocal Spin Valves

2009-03-28

arxiv.org/abs/0903.4981v1

Physics

Condensed Matter

Materials Science

10 pages, 3 figures

Scientific paper

Spintronics is a new paradigm for integrated digital electronics. Recently established as a niche for nonvolatile magnetic random access memory (MRAM), it offers new functionality while demonstrating low power and high speed performance. However, to reach high density spintronic technology must make a transition to the nanometer scale. Prototype devices are presently made using a planar geometry and have an area determined by the lithographic feature size, currently about 100 nm. Here we present a new nonplanar geometry in which one lateral dimension is given by a film thickness, the order of 10 nm. With this new approach, cell sizes can shrink by an order of magnitude. The geometry is demonstrated with a nonlocal spin valve, where we study devices with an injector/detector separation much less than the spin diffusion length.

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