Voltage switchable non-local spin-FET and methods for making same
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United States of America Patent
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Dec 1, 2015
Grant Date -
Jul 16, 2015
app pub date -
Mar 25, 2015
filing date -
Jan 5, 2012
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Abstract
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.
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