Interlayer exchange coupled adder
AssigneeCeremorphic, Inc.
InventorsVenkat Mattela, Sanghamitra Debroy, Santhosh Sivasubramani, Amit Acharyya
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Abstract
An adder device for binary magnetic applied fields uses Interlayer Exchange Coupling (IEC) structure where two layers of ferromagnetic material are separated from each other by non-magnetic layers of electrically conductive material of atomic thickness, sufficient to generate anti-magnetic response in a magnetized layer. A set of regions are positioned on a top layer above a continuous bottom layer, and the regions excited with magnetization for A and not A, B and not B, and C and not C to form a sum and an inverse carry output magnetization.
Claims21
An adder comprising:
- a continuous bottom layer of ferromagnetic material separated from a plurality of regions of ferromagnetic material positioned on a plane substantially parallel to the continuous bottom layer;
- a thin electrically conductive layer positioned between the continuous bottom layer and the plurality of regions of ferromagnetic material, the thin electrically conductive layer sufficient to induce a reciprocal anti-ferromagnetic response between one of the regions of ferromagnetic material to a corresponding coupled area of the continuous bottom layer of ferromagnetic material;
- the plurality of regions including a central region, an upper region, and a lower region;
- the central region comprising, in sequence:
- a /B input region, an /M1 region, an M3 sum[0] output region, an M2 region, and a B input region;
- the upper region including an /A region adjacent to the /M1 region and the lower region including a /C region adjacent to the /M1 region and on an opposite side from the /A region;
- the upper region also including an A input region adjacent to the M2 region and the lower region including a /C region adjacent to the B input region and on an opposite surface of the B input region from the A input;
- where a binary magnetization applied to the A input, /A input, B input, /B input, C input, and /C input generates a magnetization of the /M1 region and M3 region corresponding to a binary sum of the A input, B input, and C input.
An adder comprising, in sequence:
- a continuous bottom layer of ferromagnetic material;
- a thin layer of electrically conductive material;
- a plurality of regions of ferromagnetic material;
- the thin layer of electrically conductive material sufficient to induce an anti-ferromagnetic response between one of the regions of ferromagnetic material to the continuous bottom layer of ferromagnetic material;
- the plurality of regions including a central region, an upper region, and a lower region;
- the central region comprising, in sequence:
- a /B input region, an /M1 region, an M3 sum[0] output region, an M2 region, and a B input region;
- the upper region including an /A region adjacent to the /M1 region and the lower region including a /C region adjacent to the /M1 region and on an opposite side from the /A region;
- the upper region also including an A input region adjacent to the M2 region and the lower region including a /C region adjacent to the B input region and on an opposite surface of the B input region from the A input;
- where respective binary magnetizations applied to each of the A input region, /A input region, B input region, /B input region, C input region, and /C input region generates a magnetization of the /M1 region and M3 region corresponding to a binary sum of the A input region, B input region, and C input region.
Dependencies are inferred from the claim text.