Light-driven lattice metastability for enhanced superconductivity in FeSe/SrTiO3
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arXiv
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| Autores principales: | , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
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| _version_ | 1866908336183574528 |
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| author | Zou, Qiang Su, Zhan Mora, Andres Tellez Wu, Na Benigno, Joseph Jacobs, Christopher L. Romero, Aldo H. Mandal, Subhasish Wang, Yaxian Meng, Sheng Weinert, Michael Zhou, Hua Li, Lian Cen, Cheng |
| author_facet | Zou, Qiang Su, Zhan Mora, Andres Tellez Wu, Na Benigno, Joseph Jacobs, Christopher L. Romero, Aldo H. Mandal, Subhasish Wang, Yaxian Meng, Sheng Weinert, Michael Zhou, Hua Li, Lian Cen, Cheng |
| contents | Driven quantum materials with on demand properties controlled by external stimuli are critical for emergent quantum technology. In optically tunable superconducting heterostructures, the lattice responses at the buried interface may hold the key to the light susceptibility but is very challenging to detect. In this work, a nondestructive synchrotron-based X-ray scattering phase-retrieval technique is implemented in monolayer-FeSe/SrTiO3 heterostructures to capture the three-dimensional interfacial atomic displacements in-situ as the interface superconductivity is actively manipulated by light. It is found that the interlayer sliding between FeSe and SrTiO3 can drastically alter how the lattice responds to the light. In domains with selected stacking configurations, the interface transforms the very weak photoexcitation in SrTiO3 into significant Fe-atom displacements in FeSe and generate metastable interfacial structures that can lead to a persistent superconductivity enhancement. These findings demonstrate an effective strategy for achieving greatly amplified light-lattice coupling for efficient quantum phase manipulations at designed interfaces. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_17359 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Light-driven lattice metastability for enhanced superconductivity in FeSe/SrTiO3 Zou, Qiang Su, Zhan Mora, Andres Tellez Wu, Na Benigno, Joseph Jacobs, Christopher L. Romero, Aldo H. Mandal, Subhasish Wang, Yaxian Meng, Sheng Weinert, Michael Zhou, Hua Li, Lian Cen, Cheng Materials Science Driven quantum materials with on demand properties controlled by external stimuli are critical for emergent quantum technology. In optically tunable superconducting heterostructures, the lattice responses at the buried interface may hold the key to the light susceptibility but is very challenging to detect. In this work, a nondestructive synchrotron-based X-ray scattering phase-retrieval technique is implemented in monolayer-FeSe/SrTiO3 heterostructures to capture the three-dimensional interfacial atomic displacements in-situ as the interface superconductivity is actively manipulated by light. It is found that the interlayer sliding between FeSe and SrTiO3 can drastically alter how the lattice responds to the light. In domains with selected stacking configurations, the interface transforms the very weak photoexcitation in SrTiO3 into significant Fe-atom displacements in FeSe and generate metastable interfacial structures that can lead to a persistent superconductivity enhancement. These findings demonstrate an effective strategy for achieving greatly amplified light-lattice coupling for efficient quantum phase manipulations at designed interfaces. |
| title | Light-driven lattice metastability for enhanced superconductivity in FeSe/SrTiO3 |
| topic | Materials Science |
| url | https://arxiv.org/abs/2504.17359 |