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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2511.00813 |
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| _version_ | 1866910171241906176 |
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| author | Mangold, Maximilian Bauriedl, Lorenz Berger, Johanna Yu-Cheng, Chang Meier, Thomas N. G. Kronseder, Matthias Hakonen, Pertti Back, Christian H. Strunk, Christoph Suri, Dhavala |
| author_facet | Mangold, Maximilian Bauriedl, Lorenz Berger, Johanna Yu-Cheng, Chang Meier, Thomas N. G. Kronseder, Matthias Hakonen, Pertti Back, Christian H. Strunk, Christoph Suri, Dhavala |
| contents | We explore the role of interfacial Rashba spin-orbit coupling (SOC) for the Josephson diode effect in all-metal diffusive Josephson junctions. Devices with Fe/Pt and Cu/Pt weak links between Nb leads reveal a Josephson diode effect in an in-plane magnetic field with magneto-chiral anisotropy according to the point symmetry of Rashba SOC. The Rashba SOC originates from inversion symmetry breaking at the metal-metal interfaces. A control sample with a plain Cu-layer as weak link, in contrast, exhibits an axis-symmetric diode effect. The Fraunhofer patterns display an apparent inverted hysteresis which can be traced back to stray fields resulting from the conventional hysteretic vortex pinning in the Nb contacts. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_00813 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Magneto-Chiral Anisotropy in Josephson Diode Effect of All-Metallic Lateral Junctions with Interfacial Rashba Spin-Orbit Coupling Mangold, Maximilian Bauriedl, Lorenz Berger, Johanna Yu-Cheng, Chang Meier, Thomas N. G. Kronseder, Matthias Hakonen, Pertti Back, Christian H. Strunk, Christoph Suri, Dhavala Superconductivity We explore the role of interfacial Rashba spin-orbit coupling (SOC) for the Josephson diode effect in all-metal diffusive Josephson junctions. Devices with Fe/Pt and Cu/Pt weak links between Nb leads reveal a Josephson diode effect in an in-plane magnetic field with magneto-chiral anisotropy according to the point symmetry of Rashba SOC. The Rashba SOC originates from inversion symmetry breaking at the metal-metal interfaces. A control sample with a plain Cu-layer as weak link, in contrast, exhibits an axis-symmetric diode effect. The Fraunhofer patterns display an apparent inverted hysteresis which can be traced back to stray fields resulting from the conventional hysteretic vortex pinning in the Nb contacts. |
| title | Magneto-Chiral Anisotropy in Josephson Diode Effect of All-Metallic Lateral Junctions with Interfacial Rashba Spin-Orbit Coupling |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2511.00813 |