Position error-free control of magnetic domain-wall devices via spin-orbit torque modulation
Abstract Magnetic domain-wall devices such as racetrack memory and domain-wall shift registers facilitate massive data storage as hard disk drives with low power portability as flash memory devices. The key issue to be addressed is how perfectly the domain-wall motion can be controlled without defor...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-11-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-43468-9 |
| _version_ | 1797452153040666624 |
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| author | Seong-Hyub Lee Myeonghoe Kim Hyun-Seok Whang Yune-Seok Nam Jung-Hyun Park Kitae Kim Minhwan Kim Jiho Shin Ji-Sung Yu Jaesung Yoon Jun-Young Chang Duck-Ho Kim Sug-Bong Choe |
| author_facet | Seong-Hyub Lee Myeonghoe Kim Hyun-Seok Whang Yune-Seok Nam Jung-Hyun Park Kitae Kim Minhwan Kim Jiho Shin Ji-Sung Yu Jaesung Yoon Jun-Young Chang Duck-Ho Kim Sug-Bong Choe |
| author_sort | Seong-Hyub Lee |
| collection | DOAJ |
| description | Abstract Magnetic domain-wall devices such as racetrack memory and domain-wall shift registers facilitate massive data storage as hard disk drives with low power portability as flash memory devices. The key issue to be addressed is how perfectly the domain-wall motion can be controlled without deformation, as it can replace the mechanical motion of hard disk drives. However, such domain-wall motion in real media is subject to the stochasticity of thermal agitation with quenched disorders, resulting in severe deformations with pinning and tilting. To sort out the problem, we propose and demonstrate a new concept of domain-wall control with a position error-free scheme. The primary idea involves spatial modulation of the spin-orbit torque along nanotrack devices, where the boundary of modulation possesses broken inversion symmetry. In this work, by showing the unidirectional motion of domain wall with position-error free manner, we provide an important missing piece in magnetic domain-wall device development. |
| first_indexed | 2024-03-09T15:03:42Z |
| format | Article |
| id | doaj.art-248f3f7068ec4a0582468b8941d1ea3e |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-09T15:03:42Z |
| publishDate | 2023-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-248f3f7068ec4a0582468b8941d1ea3e2023-11-26T13:44:18ZengNature PortfolioNature Communications2041-17232023-11-011411710.1038/s41467-023-43468-9Position error-free control of magnetic domain-wall devices via spin-orbit torque modulationSeong-Hyub Lee0Myeonghoe Kim1Hyun-Seok Whang2Yune-Seok Nam3Jung-Hyun Park4Kitae Kim5Minhwan Kim6Jiho Shin7Ji-Sung Yu8Jaesung Yoon9Jun-Young Chang10Duck-Ho Kim11Sug-Bong Choe12Department of Physics and Astronomy, Seoul National UniversityDepartment of Physics and Astronomy, Seoul National UniversityDepartment of Physics and Astronomy, Seoul National UniversityDepartment of Physics and Astronomy, Seoul National UniversityDepartment of Physics and Astronomy, Seoul National UniversityDepartment of Physics and Astronomy, Seoul National UniversityDepartment of Physics and Astronomy, Seoul National UniversityDepartment of Physics and Astronomy, Seoul National UniversityDepartment of Physics and Astronomy, Seoul National UniversityDepartment of Physics and Astronomy, Seoul National UniversityDepartment of Physics and Astronomy, Seoul National UniversityCenter for Spintronics, Korea Institute of Science and Technology (KIST)Department of Physics and Astronomy, Seoul National UniversityAbstract Magnetic domain-wall devices such as racetrack memory and domain-wall shift registers facilitate massive data storage as hard disk drives with low power portability as flash memory devices. The key issue to be addressed is how perfectly the domain-wall motion can be controlled without deformation, as it can replace the mechanical motion of hard disk drives. However, such domain-wall motion in real media is subject to the stochasticity of thermal agitation with quenched disorders, resulting in severe deformations with pinning and tilting. To sort out the problem, we propose and demonstrate a new concept of domain-wall control with a position error-free scheme. The primary idea involves spatial modulation of the spin-orbit torque along nanotrack devices, where the boundary of modulation possesses broken inversion symmetry. In this work, by showing the unidirectional motion of domain wall with position-error free manner, we provide an important missing piece in magnetic domain-wall device development.https://doi.org/10.1038/s41467-023-43468-9 |
| spellingShingle | Seong-Hyub Lee Myeonghoe Kim Hyun-Seok Whang Yune-Seok Nam Jung-Hyun Park Kitae Kim Minhwan Kim Jiho Shin Ji-Sung Yu Jaesung Yoon Jun-Young Chang Duck-Ho Kim Sug-Bong Choe Position error-free control of magnetic domain-wall devices via spin-orbit torque modulation Nature Communications |
| title | Position error-free control of magnetic domain-wall devices via spin-orbit torque modulation |
| title_full | Position error-free control of magnetic domain-wall devices via spin-orbit torque modulation |
| title_fullStr | Position error-free control of magnetic domain-wall devices via spin-orbit torque modulation |
| title_full_unstemmed | Position error-free control of magnetic domain-wall devices via spin-orbit torque modulation |
| title_short | Position error-free control of magnetic domain-wall devices via spin-orbit torque modulation |
| title_sort | position error free control of magnetic domain wall devices via spin orbit torque modulation |
| url | https://doi.org/10.1038/s41467-023-43468-9 |
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