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dc.contributor.authorShao, Yixin
dc.contributor.authorDuffee, Christian
dc.contributor.authorRaimondo, Eleonora
dc.contributor.authorDavila, Noraica
dc.contributor.authorLopez-Dominguez, Victor
dc.contributor.authorKatine, Jordan A
dc.contributor.authorFinocchio, Giovanni
dc.contributor.authorKhalili Amiri, Pedram
dc.date.accessioned2023-11-23T08:12:09Z
dc.date.available2023-11-23T08:12:09Z
dc.date.issued2023
dc.identifier.citationYixin Shao et al 2023 Nanotechnology 34 495203ca_CA
dc.identifier.urihttp://hdl.handle.net/10234/204948
dc.description.abstractProbabilistic (p-) computing is a physics-based approach to addressing computational problems which are difficult to solve by conventional von Neumann computers. A key requirement for p-computing is the realization of fast, compact, and energy-efficient probabilistic bits. Stochastic magnetic tunnel junctions (MTJs) with low energy barriers, where the relative dwell time in each state is controlled by current, have been proposed as a candidate to implement p-bits. This approach presents challenges due to the need for precise control of a small energy barrier across large numbers of MTJs, and due to the need for an analog control signal. Here we demonstrate an alternative p-bit design based on perpendicular MTJs that uses the voltage-controlled magnetic anisotropy (VCMA) effect to create the random state of a p-bit on demand. The MTJs are stable (i.e. have large energy barriers) in the absence of voltage, and VCMA-induced dynamics are used to generate random numbers in less than 10 ns/bit. We then show a compact method of implementing p-bits by using VC-MTJs without a bias current. As a demonstration of the feasibility of the proposed p-bits and high quality of the generated random numbers, we solve up to 40 bit integer factorization problems using experimental bit-streams generated by VCMTJs. Our proposal can impact the development of p-computers, both by supporting a fully spintronic implementation of a p-bit, and alternatively, by enabling true random number generation at low cost for ultralow-power and compact p-computers implemented in complementary metal-oxide semiconductor chips.ca_CA
dc.format.extent10 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherIOP Publishingca_CA
dc.relation.isPartOfNanotechnology, 2023ca_CA
dc.rights© 2023 The Author(s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.ca_CA
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/ca_CA
dc.subjectprobabilistic computingca_CA
dc.subjectmagnetic tunnel junctionsca_CA
dc.subjectnanomagnetsca_CA
dc.subjectvoltage-controlled magnetic anisotropyca_CA
dc.subjectMRAMca_CA
dc.subjecttrue random number generatorsca_CA
dc.subjectinteger factorizationca_CA
dc.titleProbabilistic computing with voltage-controlled dynamics in magnetic tunnel junctionsca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttps://doi.org/10.1088/1361-6528/acf6c7
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_CA
dc.relation.publisherVersionhttps://iopscience.iop.org/article/10.1088/1361-6528/acf6c7ca_CA
dc.type.versioninfo:eu-repo/semantics/publishedVersionca_CA
project.funder.nameU.S. National Science Foundation (NSF)ca_CA
project.funder.nameItalian Ministry of University and Research (MUR)ca_CA
project.funder.namePETASPIN associationca_CA
oaire.awardNumber2311296ca_CA
oaire.awardNumber1919109ca_CA
oaire.awardNumber2106562ca_CA
oaire.awardNumberPRIN 2020LWPKH7ca_CA


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© 2023 The Author(s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms
of the Creative Commons Attribution 4.0 licence. Any
further distribution of this work must maintain attribution to the author(s) and
the title of the work, journal citation and DOI.
Excepto si se señala otra cosa, la licencia del ítem se describe como: © 2023 The Author(s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.