Voltage switchable non-local spin-FET and methods for making same

摘要

A voltage switchable non-local spin-FET is disclosed which provides a layer of chromia over a ferromagnetic substrate, such as cobalt. A film of graphene overlays the chromia, with a protective layer of metal oxide like cobalt oxide or iron oxide there between to prevent catalytic degradation of the graphene, which may occur. The graphene is provided with a contact, or source and drain, depending on the application. The spin-FET, which exhibits magnetic remanence, may be provided with a top gate of, e.g., cobalt or other ferromagnet such as iron. As an alternative to the ferromagnetic substrate, the device may be formed on a silicon or gallium arsenide base, or directly on a metal interconnect of an integrated circuit.

主权项

1. An article of manufacture comprising;
a substrate comprised of a ferromagnetic material, a metal oxide, gallium arsenide or silicon; a layer of chromia formed on said ferromagnetic layer; a layer of 5-20 Å thickness of metal oxide over said chromia layer; and a film of graphene on said layer of metal oxide.