Nanomagnetic logic: compact modeling of field-coupled computing devices for system investigations |
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Authors: | Stephan Breitkreutz Josef Kiermaier Cenk Yilmaz Xueming Ju Gy?rgy Csaba Doris Schmitt-Landsiedel Markus Becherer |
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Affiliation: | (1) SMI, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 Enschede, The Netherlands |
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Abstract: | In this paper we investigate error rates of nanomagnetic logic devices with perpendicular magnetization by compact modeling.
Two different types of nanomagnets for information propagation and logic computing are introduced. The switching behavior
of field-coupled nanomagnets is measured and analyzed. A compact model is derived from physics and experimental results are
applied to the magnetic compact model. General requirements for fabrication parameters and clocking fields for reliable operation
are extracted. We perform simulations and measurements on single devices to demonstrate the accuracy of the macromodel. Simulations
on complex systems show that the error rate of a field-coupled magnetic system strongly depends on the variation of the switching
field and the strength of the coupling field between the nanomagnets. The error rate of a 1-bit full adder is investigated
for varying dot parameters. The results demonstrate the importance of fast simulation tools for investigations on the design
of nanomagnetic computing devices and systems. |
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