# Gyro-spintronic material science using vorticity gradient in solids https://mdr.nims.go.jp/datasets/47340a25-9ed1-4610-9e40-cd1b1ac59f81 ## File - [139-Sci. Technol. Adv. Mater. 26, 2428153 (2025)-Nozaki.pdf](https://mdr.nims.go.jp/filesets/9aa88c72-effb-4849-83b5-c5e4ab693837/download) ([Detail](https://mdr.nims.go.jp/filesets/9aa88c72-effb-4849-83b5-c5e4ab693837.md)) ## Id 47340a25-9ed1-4610-9e40-cd1b1ac59f81 ## Local identifier ## Visibility open_to_public ## State published ## Created at 2025-04-02T07:15:44.262673Z ## Updated at 2025-04-02T23:30:07.616127Z ## Published at 2025-04-03T05:10:50.606226Z ## Doi ## First published url https://doi.org/10.1080/14686996.2024.2428153 ## Date published 2025-12-31 ## Recorded date published 2025-12-31 ## Resource type journal_article ## Manuscript type vor ## Collection ## Title - title: Gyro-spintronic material science using vorticity gradient in solids title_type: original lang: en ## Description - description: We present a novel method for generating spin currents using the gyromagnetic effect, a phenomenon discovered over a century ago. This effect, crucial for understanding the origins of magnetism, enables the coupling between various macroscopic rotational motions and electron spins. While higher rotational speeds intensify the effect, conventional mechanical rotations, typically, below 10,000 RPM, produce negligible results comparable to geomagnetic fluctuations, limiting applied research. Our studies demonstrate that spin current generation comparable to that of rare metals can be achieved through atomic rotations induced by GHzrange surface acoustic waves and the rotational motion of conduction electrons in metallic thin films with nanoscale gradient modulation of electrical conductivity. These effects, termed the acoustic gyromagnetic effect and the current-vorticity gyromagnetic effect, are significant in different contexts. The acoustic gyromagnetic effect is notable in high-conductivity materials like aluminum and copper, which are more abundant than conventional spintronics materials with strong spin-orbit interactions (SOIs). Conversely, the current-vorticity gyromagnetic effect requires a large conductivity gradient to produce current vorticity efficiently. This is achieved by using composition gradient structures from highly conductive metals to poorly conductive oxides or semiconductors. Consequently, unlike traditional strong-SOI materials, we can create highly efficient spin current generators with low energy dissipation due to reduced Joule loss. description_type: abstract lang: und ## Creator - name: Yukio Nozaki role: author - name: Hiroaki Sukegawa role: author orcid: https://orcid.org/0000-0002-4034-7848 organization: National Institute for Materials Science - name: Shinichi Watanabe role: author - name: Seiji Yunoki role: author - name: Taisuke Horaguchi role: author - name: Hayato Nakayama role: author - name: Kazuto Yamanoi role: author - name: Zhenchao Wen role: author orcid: https://orcid.org/0000-0001-7496-1339 organization: National Institute for Materials Science - name: Cong He role: author organization: National Institute for Materials Science - name: Jieyuan Song role: author orcid: https://orcid.org/0000-0001-6846-2875 organization: National Institute for Materials Science - name: Tadakatsu Ohkubo role: author orcid: https://orcid.org/0000-0003-3548-1951 organization: National Institute for Materials Science - name: Seiji Mitani role: author orcid: https://orcid.org/0000-0002-1348-0774 organization: National Institute for Materials Science - name: Kazuki Maezawa role: author - name: Daichi Nishikawa role: author - name: Shun Fujii role: author - name: Mamoru Matsuo role: author - name: Junji Fujimoto role: author - name: Sadamichi Maekawa role: author ## Contact agent ## Publisher organization: Informa UK Limited ## Managing organization ## Keyword - subject: Spintronics schema: not_defined - subject: spin current schema: not_defined ## Rights - description: "© 2025 The Author(s). Published by National Institute for Materials Science in partnership with Taylor & Francis Group.\r\nThis is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent." identifier: https://creativecommons.org/licenses/by-nc/4.0/ ## Other identifier(s) ## Data origin - data_origin_type: other ## Embargo ## Journal - title: Science and Technology of Advanced Materials issn: '14686996' volume: '26' issue: '1' article_number: '2428153' ## Conference ## Related item ## Funding - identifier: JPMJCR19J4 funder_name: Core Research for Evolutional Science and Technology - identifier: Grants-in-Aid for Scientific Research / 23H01839 funder_name: Japan Society for the Promotion of Science - identifier: Grants-in-Aid for Scientific Research / 21H04565 funder_name: Japan Society for the Promotion of Science - identifier: Quantum Leap Flagship Program / JPMXS0118067246 funder_name: Ministry of Education, Culture, Sports, Science and Technology - identifier: Nanotechnology Platform Program / JPMXP09-F-21-AT-0085 funder_name: Ministry of Education, Culture, Sports, Science and Technology - identifier: Grants-in-Aid for Scientific Research / 24H00322 funder_name: Japan Society for the Promotion of Science - identifier: Grants-in-Aid for Scientific Research / 24H02233 funder_name: Japan Society for the Promotion of Science - identifier: Grants-in-Aid for Scientific Research / 23K26165 funder_name: Japan Society for the Promotion of Science - identifier: Grants-in-Aid for Scientific Research / 22K13997 funder_name: Japan Society for the Promotion of Science - identifier: Grant-in-Aid for Research Activity Start-up / 22K20359 funder_name: Japan Society for the Promotion of Science ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: 9aa88c72-effb-4849-83b5-c5e4ab693837 filename: 139-Sci. Technol. Adv. Mater. 26, 2428153 (2025)-Nozaki.pdf content_type: application/pdf size: 32141116 md5: a9080741431f7145669d1cd114ef7668 ## Thumbnail fileset_id: 9aa88c72-effb-4849-83b5-c5e4ab693837 filename: 139-Sci. Technol. Adv. Mater. 26, 2428153 (2025)-Nozaki.pdf