NER: Computing Architectures for Coupled Nanomagnets

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CCR-0210421Wolfgang Porod and Gary H. Bernstein"NER: Computing Architectures for Coupled Nanomagnets"We explore the feasibility of developing computing architecturesimplemented in magnetically-coupled arrays of nanometer-sized dots andpillars. Similar to the electronic Quantum-Dot Cellular Automata (QCA)scheme, which was previously developed by the Notre Dame group,information is encoded in the magnetization of single-domainpermanent-magnet structures, and the physical interaction betweenneighboring magnets provides the local connectivity. The main goal ofthis project is to investigate how logic functions can be realized instructured arrays of coupled nanomagnets. We propose a joint theoreticaland experimental approach to explore the feasibility of such magneticQCA-like architectures for computing and signal processing. Oncefeasibility of elementary logic functions is established, one mayenvision special-purpose cellular processor cells composed of couplednanoscale magnetic sensors and memories. The robustness of such magneticsystems opens the potential for applications where nanometer-sized, yetrugged, systems are required with a wide range of operatingtemperatures.