Vortex confinement through an unquantized magnetic flux
Abstract Geometrically confined superconductors often experience a breakdown in the quantization of magnetic flux owing to the incomplete screening of the supercurrent against field penetration. In this study, we report that magnetic field confinement occurs regardless of the dimensionality of the s...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-09-01
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| Series: | NPG Asia Materials |
| Online Access: | https://doi.org/10.1038/s41427-024-00564-6 |
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| author | Geunyong Kim Jinyoung Yun Jinho Yang Ilkyu Yang Dirk Wulferding Roman Movshovich Gil Young Cho Ki-Seok Kim Garam Hahn Jeehoon Kim |
| author_facet | Geunyong Kim Jinyoung Yun Jinho Yang Ilkyu Yang Dirk Wulferding Roman Movshovich Gil Young Cho Ki-Seok Kim Garam Hahn Jeehoon Kim |
| author_sort | Geunyong Kim |
| collection | DOAJ |
| description | Abstract Geometrically confined superconductors often experience a breakdown in the quantization of magnetic flux owing to the incomplete screening of the supercurrent against field penetration. In this study, we report that magnetic field confinement occurs regardless of the dimensionality of the system, even extending to 1D linear potential systems. By using a vector-field magnetic force microscope, we successfully create a vortex‒antivortex pair connected by a 1D unquantized magnetic flux in ultrathin superconducting films. Through an investigation of the manipulation and thermal behavior of the vortex pair, we uncover a long-range interaction mediated by the unquantized magnetic flux. These findings suggest a universal phenomenon of unquantized magnetic flux formation, independent of the geometry of the system. Our results present an experimental route for investigating the impact of confinement on superconducting properties and order parameters in unconventional superconductors characterized by extremely low dimensionality. |
| format | Article |
| id | doaj-art-accc6ef9db864dd09781a33134ba3bed |
| institution | Kabale University |
| issn | 1884-4057 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | NPG Asia Materials |
| spelling | doaj-art-accc6ef9db864dd09781a33134ba3bed2025-01-19T12:28:27ZengNature PortfolioNPG Asia Materials1884-40572024-09-011611810.1038/s41427-024-00564-6Vortex confinement through an unquantized magnetic fluxGeunyong Kim0Jinyoung Yun1Jinho Yang2Ilkyu Yang3Dirk Wulferding4Roman Movshovich5Gil Young Cho6Ki-Seok Kim7Garam Hahn8Jeehoon Kim9Department of Physics, Pohang University of Science and TechnologyDepartment of Physics, Pohang University of Science and TechnologyDepartment of Physics, Pohang University of Science and TechnologyDepartment of Physics, Pohang University of Science and TechnologyCenter for Correlated Electron Systems, Institute for Basic Science (IBS), and Department of Physics and Astronomy, Seoul National University (SNU)MPA-CMMS, Los Alamos National LaboratoryDepartment of Physics, Pohang University of Science and TechnologyDepartment of Physics, Pohang University of Science and TechnologyPohang Accelerator Laboratory, Pohang University of Science and TechnologyDepartment of Physics, Pohang University of Science and TechnologyAbstract Geometrically confined superconductors often experience a breakdown in the quantization of magnetic flux owing to the incomplete screening of the supercurrent against field penetration. In this study, we report that magnetic field confinement occurs regardless of the dimensionality of the system, even extending to 1D linear potential systems. By using a vector-field magnetic force microscope, we successfully create a vortex‒antivortex pair connected by a 1D unquantized magnetic flux in ultrathin superconducting films. Through an investigation of the manipulation and thermal behavior of the vortex pair, we uncover a long-range interaction mediated by the unquantized magnetic flux. These findings suggest a universal phenomenon of unquantized magnetic flux formation, independent of the geometry of the system. Our results present an experimental route for investigating the impact of confinement on superconducting properties and order parameters in unconventional superconductors characterized by extremely low dimensionality.https://doi.org/10.1038/s41427-024-00564-6 |
| spellingShingle | Geunyong Kim Jinyoung Yun Jinho Yang Ilkyu Yang Dirk Wulferding Roman Movshovich Gil Young Cho Ki-Seok Kim Garam Hahn Jeehoon Kim Vortex confinement through an unquantized magnetic flux NPG Asia Materials |
| title | Vortex confinement through an unquantized magnetic flux |
| title_full | Vortex confinement through an unquantized magnetic flux |
| title_fullStr | Vortex confinement through an unquantized magnetic flux |
| title_full_unstemmed | Vortex confinement through an unquantized magnetic flux |
| title_short | Vortex confinement through an unquantized magnetic flux |
| title_sort | vortex confinement through an unquantized magnetic flux |
| url | https://doi.org/10.1038/s41427-024-00564-6 |
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