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Ultra-fast logic devices using artificial "neurons" based on antiferromagnetic pulse generators
Taras Shevchenko Natl Univ Kyiv, Fac Radiophys Elect & Comp Syst, UA-01601 Kiev, Ukraine..
Taras Shevchenko Natl Univ Kyiv, Fac Radiophys Elect & Comp Syst, UA-01601 Kiev, Ukraine..ORCID iD: 0000-0002-4378-0866
Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA..
KTH, School of Engineering Sciences (SCI), Applied Physics, Materials and Nanophysics.ORCID iD: 0000-0002-3513-6608
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2018 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 124, no 15, article id 152115Article in journal (Refereed) Published
Abstract [en]

It has been shown previously that spin-Hall oscillators based on current-driven bi-layered film structures containing an antiferromagnet (AFM) and a normal metal can generate ultra-short (similar to 2 ps) "spike-like" pulses in response to an external current stimulus of a sufficient amplitude, thus operating as ultra-fast artificial "neurons." Here, we report the results of numerical simulations demonstrating that a single AFM "neuron" can perform the logic functions of OR, AND, MAJORITY, or Q-gates, while a circuit consisting of a small number n < 5 of AFM "neurons" can function as a FULL-ADDER or as a dynamic memory loop with variable clock frequency. The clock frequencies of such AFM-based logic devices could reach tens of GHz, which make them promising as base elements of future ultra-fast high-efficiency neuromorphic computing. 

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2018. Vol. 124, no 15, article id 152115
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Physical Sciences
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URN: urn:nbn:se:kth:diva-238915DOI: 10.1063/1.5042348ISI: 000448317300026Scopus ID: 2-s2.0-85054378384OAI: oai:DiVA.org:kth-238915DiVA, id: diva2:1265275
Note

QC 20181122

Available from: 2018-11-22 Created: 2018-11-22 Last updated: 2018-11-22Bibliographically approved

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Åkerman, Johan

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