| アイテムタイプ |
共通アイテムタイプ(1) |
| 公開日 |
2025-03-03 |
| タイトル |
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|
タイトル |
Phase binarization in mutually synchronized bias field free spin-Hall nano-oscillators for reservoir computing |
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言語 |
en |
| その他のタイトル |
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その他のタイトル |
Phase Binarization in Mutually Synchronized Bias Field-free Spin Hall Nano-oscillators for Reservoir Computing |
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言語 |
en |
| 著者 |
Manna, Sourabh
Medwal, Rohit
Mohan, John Rex
福間, 康裕
Rawat, Rajdeep Singh
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Mutually coupled spin-Hall nano-oscillators (SHNO) can exhibit a binarized phase state, offering pathways to realize Ising machines and efficient neuromorphic hardware. Conventionally, phase binarization is achieved in coupled identical SHNOs via injecting an external microwave at twice the oscillator frequency in the presence of a strong biasing magnetic field. However, this technology poses potential challenges of higher energy consumption and complex circuit design. Moreover, differences in the individual characteristic frequencies of SHNOs resulting from fabrication-induced mismatch in SHNO dimensions may hinder their mutual synchronization. Addressing these challenges, we demonstrate purely dc current-driven mutual synchronization and phase binarization of two nonidentical nanoconstriction SHNOs without biasing magnetic field and microwave injection. We thoroughly investigate these phenomena and underlying mechanisms using micromagnetic simulation. We show how the localized fundamental mode of the spin wave emerging from the magnetization auto-oscillation reinforces the mutual synchronization, while the second-harmonic spin wave induces the phase binarization in the coupled SHNO pair. We further demonstrate the bias field free synchronized SHNO pair efficiently performing a reservoir computing benchmark learning task: sin- and square-wave classification, with 100% accuracy, utilizing the current-tunable phase binarization phenomenon. Our results showcase promising magnetization dynamics of coupled bias field free SHNOs for future computing applications. |
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言語 |
en |
| 書誌情報 |
en : Physical Review B
巻 109,
号 21,
p. 214425,
発行日 2024-06-18
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| 出版社 |
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出版者 |
American Physical Society |
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言語 |
en |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Spin Hall nano-oscillator |
| キーワード |
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言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Magnetic anisotropy |
| キーワード |
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|
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 |
Reservoir computing |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| DOI |
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関連タイプ |
isIdenticalTo |
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|
識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1103/PhysRevB.109.214425 |
| ISSN |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
2469-9950 |
| ISSN |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
2469-9969 |
| 研究者情報 |
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|
URL |
https://hyokadb02.jimu.kyutech.ac.jp/html/100000402_ja.html |
| 論文ID（連携） |
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|
値 |
10449328 |
| 連携ID |
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|
値 |
13094 |
10449328.pdf (1.9 MB)
