Percolative Pathway to Stripe Order in KTaO3-Based Superconductivity
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arXiv
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| Auteurs principaux: | , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866908673900544000 |
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| author | Chen, Zhihao Pang, Chun Sum Brian Yang, Meng Wang, Yuxin Jiang, Kun Davidson, Bruce A. Elfimov, Ilya Sawatzky, George A. Damascelli, Andrea Zou, Ke Cheng, Zhi Gang |
| author_facet | Chen, Zhihao Pang, Chun Sum Brian Yang, Meng Wang, Yuxin Jiang, Kun Davidson, Bruce A. Elfimov, Ilya Sawatzky, George A. Damascelli, Andrea Zou, Ke Cheng, Zhi Gang |
| contents | The sensitivity of low dimensional superconductors to fluctuations gives rise to emergent behaviors beyond the conventional Bardeen Cooper Schrieffer framework. Anisotropy is one such manifestation, often linked to spatially modulated electronic states and unconventional pairing mechanisms. Pronounced in plane anisotropy recently reported at KTaO3 based oxide interfaces points to the emergence of a stripe order in superconducting phase, yet its microscopic origin and formation pathway remain unresolved. Here, we show that controlled interfacial disorder in MgO/KTaO3(111) heterostructures drives a percolative evolution from localized Cooper-pair islands to superconducting puddles and eventually to stripes. The extracted stripe width matches the spin precession length, suggesting a self organized modulation governed by spin orbit coupling and lattice-symmetry breaking. These findings identify disorder as both a tuning parameter and a diagnostic probe for emergent superconductivity in two dimensional quantum materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_20013 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Percolative Pathway to Stripe Order in KTaO3-Based Superconductivity Chen, Zhihao Pang, Chun Sum Brian Yang, Meng Wang, Yuxin Jiang, Kun Davidson, Bruce A. Elfimov, Ilya Sawatzky, George A. Damascelli, Andrea Zou, Ke Cheng, Zhi Gang Superconductivity Mesoscale and Nanoscale Physics The sensitivity of low dimensional superconductors to fluctuations gives rise to emergent behaviors beyond the conventional Bardeen Cooper Schrieffer framework. Anisotropy is one such manifestation, often linked to spatially modulated electronic states and unconventional pairing mechanisms. Pronounced in plane anisotropy recently reported at KTaO3 based oxide interfaces points to the emergence of a stripe order in superconducting phase, yet its microscopic origin and formation pathway remain unresolved. Here, we show that controlled interfacial disorder in MgO/KTaO3(111) heterostructures drives a percolative evolution from localized Cooper-pair islands to superconducting puddles and eventually to stripes. The extracted stripe width matches the spin precession length, suggesting a self organized modulation governed by spin orbit coupling and lattice-symmetry breaking. These findings identify disorder as both a tuning parameter and a diagnostic probe for emergent superconductivity in two dimensional quantum materials. |
| title | Percolative Pathway to Stripe Order in KTaO3-Based Superconductivity |
| topic | Superconductivity Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2511.20013 |