Magnetic Domain-Wall Logic

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Science  09 Sep 2005:
Vol. 309, Issue 5741, pp. 1688-1692
DOI: 10.1126/science.1108813

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“Spintronics,” in which both the spin and charge of electrons are used for logic and memory operations, promises an alternate route to traditional semiconductor electronics. A complete logic architecture can be constructed, which uses planar magnetic wires that are less than a micrometer in width. Logical NOT, logical AND, signal fan-out, and signal cross-over elements each have a simple geometric design, and they can be integrated together into one circuit. An additional element for data input allows information to be written to domain-wall logic circuits.

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