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A computing architecture composed of field‐coupled single domain nanomagnets clocked by magnetic field
Author(s) -
Csaba György,
Porod Wolfgang,
Csurgay Árpád I.
Publication year - 2003
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.226
Subject(s) - nanomagnet , electronic circuit , digital electronics , electrical engineering , field (mathematics) , logic gate , magnetic field , coupling (piping) , domain (mathematical analysis) , computer science , nanotechnology , physics , electronic engineering , engineering , materials science , mathematics , quantum mechanics , mechanical engineering , mathematical analysis , magnetization , pure mathematics
Next neighbour field coupling of nanodevices is emerging as an alternative way to integrate nanoelectronic devices ( Nanotechnology 1993; 4 : 49). In this paper, integrated circuits composed of single domain nanomagnets are proposed. New magnetic field‐coupled devices with multiple equilibrium states are introduced. The devices are made locally active by exposing them to external magnetic fields. Non‐reciprocity is achieved by proper design of the nanomagnet's shape together with its clocking. We demonstrate that (i) digital signal can propagate along a line of coupled single domain nanomagnets; (ii) and a family of logic circuits (inverter, majority gate, etc.) can be realized. Based on these observations we envision a new nanoelectronic computing architecture as a two‐dimensional array of field‐coupled nanomagnets. We estimate an integration density of 10 10 device/cm 2 , few hundred MHz operation speed, straightforward fabrication technology and robust operation in a wide temperature range. Copyright 2003 John Wiley & Sons, Ltd.