Violation of Pauli Limit at KTaO3(110) Interfaces
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915326401183744 |
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| author | Poage, Samuel J. Gao, Xueshi Baksi, Merve Salmani-Rezaie, Salva Muller, David A. Kumah, Divine P. Lau, Chun Ning Lorenzana, Jose Gastiasoro, Maria N. Ahadi, Kaveh |
| author_facet | Poage, Samuel J. Gao, Xueshi Baksi, Merve Salmani-Rezaie, Salva Muller, David A. Kumah, Divine P. Lau, Chun Ning Lorenzana, Jose Gastiasoro, Maria N. Ahadi, Kaveh |
| contents | The superconducting order parameter at the KTaO3 interfaces and its dependence on interface orientation remains a subject of debate. The superconductivity at these interfaces exhibits strong resilience against in-plane magnetic field and violates Pauli limit. The interface orientation dependence of critical field and violation of Pauli limit, however, have not been investigated. To address this problem, we grew epitaxial LaMnO3/KTaO3 heterostructures using molecular beam epitaxy. We show that superconductivity is extremely robust against the in-plane magnetic field. Our results indicate that the interface orientation, despite impacting the critical temperature, does not affect the ratio of critical field to the Pauli limiting field. These results offer opportunities to engineer superconductors which are resilient against magnetic field. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_13264 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Violation of Pauli Limit at KTaO3(110) Interfaces Poage, Samuel J. Gao, Xueshi Baksi, Merve Salmani-Rezaie, Salva Muller, David A. Kumah, Divine P. Lau, Chun Ning Lorenzana, Jose Gastiasoro, Maria N. Ahadi, Kaveh Superconductivity The superconducting order parameter at the KTaO3 interfaces and its dependence on interface orientation remains a subject of debate. The superconductivity at these interfaces exhibits strong resilience against in-plane magnetic field and violates Pauli limit. The interface orientation dependence of critical field and violation of Pauli limit, however, have not been investigated. To address this problem, we grew epitaxial LaMnO3/KTaO3 heterostructures using molecular beam epitaxy. We show that superconductivity is extremely robust against the in-plane magnetic field. Our results indicate that the interface orientation, despite impacting the critical temperature, does not affect the ratio of critical field to the Pauli limiting field. These results offer opportunities to engineer superconductors which are resilient against magnetic field. |
| title | Violation of Pauli Limit at KTaO3(110) Interfaces |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2502.13264 |