Ultra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic auto-oscillator

Abstract We demonstrate analytically and numerically, that a thin film of an antiferromagnetic (AFM) material, having biaxial magnetic anisotropy and being driven by an external spin-transfer torque signal, can be used for the generation of ultra-short “Dirac-delta-like” spikes. The duration of the...

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Autores principales:	Roman Khymyn, Ivan Lisenkov, James Voorheis, Olga Sulymenko, Oleksandr Prokopenko, Vasil Tiberkevich, Johan Akerman, Andrei Slavin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Biaxial Magnetic Anisotropy Spike Generation Neel Vector Slave Neuron Inverse Shear (ISHE) Medicine R Science Q
Acceso en línea:	https://doaj.org/article/29153fdad5f54ccfa85e888803789734
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spelling	oai:doaj.org-article:29153fdad5f54ccfa85e8888037897342021-12-02T15:09:06ZUltra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic auto-oscillator10.1038/s41598-018-33697-02045-2322https://doaj.org/article/29153fdad5f54ccfa85e8888037897342018-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-33697-0https://doaj.org/toc/2045-2322Abstract We demonstrate analytically and numerically, that a thin film of an antiferromagnetic (AFM) material, having biaxial magnetic anisotropy and being driven by an external spin-transfer torque signal, can be used for the generation of ultra-short “Dirac-delta-like” spikes. The duration of the generated spikes is several picoseconds for typical AFM materials and is determined by the inplane magnetic anisotropy and the effective damping of the AFM material. The generated output signal can consist of a single spike or a discrete group of spikes (“bursting”), which depends on the repetition (clock) rate, amplitude, and shape of the external control signal. The spike generation occurs only when the amplitude of the control signal exceeds a certain threshold, similar to the action of a biological neuron in response to an external stimulus. The “threshold” behavior of the proposed AFM spike generator makes possible its application not only in the traditional microwave signal processing but also in the future neuromorphic signal processing circuits working at clock frequencies of tens of gigahertz.Roman KhymynIvan LisenkovJames VoorheisOlga SulymenkoOleksandr ProkopenkoVasil TiberkevichJohan AkermanAndrei SlavinNature PortfolioarticleBiaxial Magnetic AnisotropySpike GenerationNeel VectorSlave NeuronInverse Shear (ISHE)MedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biaxial Magnetic Anisotropy Spike Generation Neel Vector Slave Neuron Inverse Shear (ISHE) Medicine R Science Q
spellingShingle	Biaxial Magnetic Anisotropy Spike Generation Neel Vector Slave Neuron Inverse Shear (ISHE) Medicine R Science Q Roman Khymyn Ivan Lisenkov James Voorheis Olga Sulymenko Oleksandr Prokopenko Vasil Tiberkevich Johan Akerman Andrei Slavin Ultra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic auto-oscillator
description	Abstract We demonstrate analytically and numerically, that a thin film of an antiferromagnetic (AFM) material, having biaxial magnetic anisotropy and being driven by an external spin-transfer torque signal, can be used for the generation of ultra-short “Dirac-delta-like” spikes. The duration of the generated spikes is several picoseconds for typical AFM materials and is determined by the inplane magnetic anisotropy and the effective damping of the AFM material. The generated output signal can consist of a single spike or a discrete group of spikes (“bursting”), which depends on the repetition (clock) rate, amplitude, and shape of the external control signal. The spike generation occurs only when the amplitude of the control signal exceeds a certain threshold, similar to the action of a biological neuron in response to an external stimulus. The “threshold” behavior of the proposed AFM spike generator makes possible its application not only in the traditional microwave signal processing but also in the future neuromorphic signal processing circuits working at clock frequencies of tens of gigahertz.
format	article
author	Roman Khymyn Ivan Lisenkov James Voorheis Olga Sulymenko Oleksandr Prokopenko Vasil Tiberkevich Johan Akerman Andrei Slavin
author_facet	Roman Khymyn Ivan Lisenkov James Voorheis Olga Sulymenko Oleksandr Prokopenko Vasil Tiberkevich Johan Akerman Andrei Slavin
author_sort	Roman Khymyn
title	Ultra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic auto-oscillator
title_short	Ultra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic auto-oscillator
title_full	Ultra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic auto-oscillator
title_fullStr	Ultra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic auto-oscillator
title_full_unstemmed	Ultra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic auto-oscillator
title_sort	ultra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic auto-oscillator
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/29153fdad5f54ccfa85e888803789734
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Ultra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic auto-oscillator

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