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Spin-orbit torque assisted magnetization reversal of 100-nm-long vertical pillar
http://hdl.handle.net/10112/0002001570
http://hdl.handle.net/10112/000200157066532021-04c4-4616-a629-3dde6f8e1f99
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KU-1100-20220721-01.pdf (1.3 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2024-06-24 | |||||
| タイトル | ||||||
| タイトル | Spin-orbit torque assisted magnetization reversal of 100-nm-long vertical pillar | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 著者 |
本多, 周太
× 本多, 周太× 園部, 義明 |
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| 概要 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Long vertical pillars, with a width of the order of nanometers and with perpendicular shape anisotropy (PSA), have high thermal stability. The advantage of using longer pillars is that they can increase the memory areal density while maintaining robust thermal stability. The current-induced magnetization reversal of long pillars is a significant challenge in spintronic applications such as high-density magnetic memories. However, the magnetization of pillars that are more than 100 nm long has never been reversed by spin-orbit torque (SOT) or spin injection from another ferromagnet. Against this background, we propose a novel magnetization reversal method for pillars based on both SOT and spin transfer torque without using a ferromagnet for spin injection. Furthermore, this SOT-assisted method significantly reduces the reversal time, as was demonstrated by micromagnetic simulation. Using a spin-polarized current and SOT, the magnetization was reversed in pillars with length ≥100 nm. The magnetization of pillars with PSA and those with both high perpendicular magnetic anisotropy and PSA was successfully reversed. The findings of this study are physically novel and significant for practical applications. Consequently, the proposed new writing scheme paves the way for next-generation spintronic devices. | |||||
| 言語 | en | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Japan Society for the Promotion of Science KAKENHI (Grant Number 20H02607) Kansai University Fund for Supporting Outlay Research Centers 2020 CREST, Japan Science and Technology Agency (Grant Number JPMJCR21C1) |
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| 言語 | en | |||||
| 書誌情報 |
en : Journal of Physics D : Applied Physics 巻 55, 号 39, p. 1-8, 発行日 2022-07-21 |
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| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 00223727 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | EISSN | |||||
| 収録物識別子 | 13616463 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00704905 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1088/1361-6463/ac80dd | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | This is the Accepted Manuscript version of an article accepted for publication in Journal of Physics D: Applied Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 10.1088/1361-6463/ac80dd. | |||||
| 著者版フラグ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
| 出版者 | ||||||
| 出版者 | IOP Publishing | |||||
| 言語 | en | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | spin-orbit torque | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | PSA-MRAM | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | magnetization reversal | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | micromagnetic simulation | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Multibit-MRAM | |||||
| キーワード | ||||||
| 言語 | ja | |||||
| 主題Scheme | Other | |||||
| 主題 | 関西大学 | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Kansai University | |||||
