title: Highly Efficient Spin-Current Operation in a Cu Nano-Ring.
abstract: An all-metal lateral spin-valve structure has been fabricated with a medial Copper nano-ring to split the diffusive spin-current path. We have demonstrated significant modulation of the non-local signal by the application of a magnetic field gradient across the nano-ring, which is up to 30% more efficient than the conventional Hanle configuration at room temperature. This was achieved by passing a dc current through a current-carrying bar to provide a locally induced Ampère field. We have shown that in this manner a lateral spin-valve gains an additional functionality in the form of three-terminal gate operation for future spintronic logic.
authors.affiliation: Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom.
authors.forename: Benedict A
authors.initials: BA
authors.lastname: Murphy
authors.affiliation: Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom.|Department of Electronics, University of York, Heslington, York YO10 5DD, United Kingdom.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Vick
authors.affiliation: Department of Electronics, University of York, Heslington, York YO10 5DD, United Kingdom.
authors.forename: Marjan
authors.initials: M
authors.lastname: Samiepour
authors.affiliation: Department of Electronics, University of York, Heslington, York YO10 5DD, United Kingdom.
authors.forename: Atsufumi
authors.initials: A
authors.lastname: Hirohata