Energy-efficient ultrafast nucleation of single and multiple antiferromagnetic skyrmions using in-plane spin polarized current

Abstract We numerically investigate the ultrafast nucleation of antiferromagnetic (AFM) skyrmion using in-plane spin-polarized current and present its key advantages over out-of-plane spin-polarized current. We show that the threshold current density required for the creation of AFM skyrmion is almo...

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Autores principales:	Kacho Imtiyaz Ali Khan, Naveen Sisodia, P. K. Muduli
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cafbc1bf26d7433cb443b13d239ad4b9
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spelling	oai:doaj.org-article:cafbc1bf26d7433cb443b13d239ad4b92021-12-02T17:47:23ZEnergy-efficient ultrafast nucleation of single and multiple antiferromagnetic skyrmions using in-plane spin polarized current10.1038/s41598-021-91591-82045-2322https://doaj.org/article/cafbc1bf26d7433cb443b13d239ad4b92021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91591-8https://doaj.org/toc/2045-2322Abstract We numerically investigate the ultrafast nucleation of antiferromagnetic (AFM) skyrmion using in-plane spin-polarized current and present its key advantages over out-of-plane spin-polarized current. We show that the threshold current density required for the creation of AFM skyrmion is almost an order of magnitude lower for the in-plane spin-polarized current. The nucleation time for the AFM skyrmion is found to be $$12-7$$ 12 - 7 ps for the corresponding current density of 1– $$3\times 10^{13}~\text{A/m}^{2}$$ 3 × 10 13 A/m 2 . We also demonstrate ultrafast nucleation of multiple AFM skyrmions that is possible only with in-plane spin polarized current and discuss how the current pulse width can be used to control the number of AFM skyrmions. The results show more than one order of magnitude improvement in energy consumption for ultrafast nucleation of AFM skyrmions using in-plane spin-polarized current, which is promising for applications such as logic gates, racetrack memory, and neuromorphic computing.Kacho Imtiyaz Ali KhanNaveen SisodiaP. K. MuduliNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kacho Imtiyaz Ali Khan Naveen Sisodia P. K. Muduli Energy-efficient ultrafast nucleation of single and multiple antiferromagnetic skyrmions using in-plane spin polarized current
description	Abstract We numerically investigate the ultrafast nucleation of antiferromagnetic (AFM) skyrmion using in-plane spin-polarized current and present its key advantages over out-of-plane spin-polarized current. We show that the threshold current density required for the creation of AFM skyrmion is almost an order of magnitude lower for the in-plane spin-polarized current. The nucleation time for the AFM skyrmion is found to be $$12-7$$ 12 - 7 ps for the corresponding current density of 1– $$3\times 10^{13}~\text{A/m}^{2}$$ 3 × 10 13 A/m 2 . We also demonstrate ultrafast nucleation of multiple AFM skyrmions that is possible only with in-plane spin polarized current and discuss how the current pulse width can be used to control the number of AFM skyrmions. The results show more than one order of magnitude improvement in energy consumption for ultrafast nucleation of AFM skyrmions using in-plane spin-polarized current, which is promising for applications such as logic gates, racetrack memory, and neuromorphic computing.
format	article
author	Kacho Imtiyaz Ali Khan Naveen Sisodia P. K. Muduli
author_facet	Kacho Imtiyaz Ali Khan Naveen Sisodia P. K. Muduli
author_sort	Kacho Imtiyaz Ali Khan
title	Energy-efficient ultrafast nucleation of single and multiple antiferromagnetic skyrmions using in-plane spin polarized current
title_short	Energy-efficient ultrafast nucleation of single and multiple antiferromagnetic skyrmions using in-plane spin polarized current
title_full	Energy-efficient ultrafast nucleation of single and multiple antiferromagnetic skyrmions using in-plane spin polarized current
title_fullStr	Energy-efficient ultrafast nucleation of single and multiple antiferromagnetic skyrmions using in-plane spin polarized current
title_full_unstemmed	Energy-efficient ultrafast nucleation of single and multiple antiferromagnetic skyrmions using in-plane spin polarized current
title_sort	energy-efficient ultrafast nucleation of single and multiple antiferromagnetic skyrmions using in-plane spin polarized current
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/cafbc1bf26d7433cb443b13d239ad4b9
work_keys_str_mv	AT kachoimtiyazalikhan energyefficientultrafastnucleationofsingleandmultipleantiferromagneticskyrmionsusinginplanespinpolarizedcurrent AT naveensisodia energyefficientultrafastnucleationofsingleandmultipleantiferromagneticskyrmionsusinginplanespinpolarizedcurrent AT pkmuduli energyefficientultrafastnucleationofsingleandmultipleantiferromagneticskyrmionsusinginplanespinpolarizedcurrent
_version_	1718379495217430528

Energy-efficient ultrafast nucleation of single and multiple antiferromagnetic skyrmions using in-plane spin polarized current

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