Nakatani, Yoshinobu, Yamada, Keisuke and Hirohata, Atsufumi orcid.org/0000-0001-9107-2330 (2021) Discrimination of skyrmion chirality via spin-orbit and -transfer torques for logic operation. Scientific Reports. 8415. ISSN 2045-2322
Abstract
Recently many works on magnetic memories and logic circuits, which use a magnetic skyrmion have been reported. Previously we micromagnetically simulated a method to switch a chirality of a magnetic skyrmion formed in a magnetic thin film by introducing a pulsed heat spot. In this paper, we propose a method to discriminate the chirality of a skyrmion in a branched nanowire by using spin-orbit torque (SOT) and spin-transfer torque (STT), and confirm the validity of the method by using simulation. The simulated results show that the motion changes depending on the chirality when additional SOT is applied on a skyrmion moving in a branch by STT. This method can be used as a fundamental building block for electrical detection in memory and logic devices using the chirality of skyrmions as a data bit in addition to the presence (and polarity) of the skyrmions as conventionally used, which can be lead to multiple-valued operation.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Author(s) 2021 |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Electronic Engineering (York) |
Depositing User: | Pure (York) |
Date Deposited: | 09 Mar 2022 17:00 |
Last Modified: | 16 Oct 2024 17:28 |
Published Version: | https://doi.org/10.1038/s41598-021-87742-6 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1038/s41598-021-87742-6 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:184558 |
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Filename: s41598_021_87742_6.pdf
Description: Discrimination of skyrmion chirality via spin–orbit and –transfer torques for logic operation
Licence: CC-BY 2.5