Emergent superconducting stripes in two-orbital superconductors
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arXiv
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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866913998634483712 |
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| author | Qin, Qiong Yang, Yi-feng |
| author_facet | Qin, Qiong Yang, Yi-feng |
| contents | Motivated by recent experiments in KTaO$_3$/EuO interface, we propose an intrinsic mechanism where superconducting stripes emerge naturally without involving disorder, charge inhomogeneity, or competing orders. Our theory is based on a two-orbital model of superconductivity, where one orbital displays a quasi-one-dimensional dispersion and the other orbital is more localized and contributes pairing interactions along the perpendicular direction. Our auxiliary-field Monte Carlo simulations demonstrate that the pairing amplitude exhibits spatial modulation such that the superconductivity naturally disaggregates into two-leg or three-leg superconducting stripes separated by non-superconducting blocks. Our work provides a promising scenario of emergent superconducting stripes in homogeneous two-dimensional systems and reveals unexpectedly rich physics in two-orbital superconductors for future materials design. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_14632 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Emergent superconducting stripes in two-orbital superconductors Qin, Qiong Yang, Yi-feng Superconductivity Strongly Correlated Electrons Motivated by recent experiments in KTaO$_3$/EuO interface, we propose an intrinsic mechanism where superconducting stripes emerge naturally without involving disorder, charge inhomogeneity, or competing orders. Our theory is based on a two-orbital model of superconductivity, where one orbital displays a quasi-one-dimensional dispersion and the other orbital is more localized and contributes pairing interactions along the perpendicular direction. Our auxiliary-field Monte Carlo simulations demonstrate that the pairing amplitude exhibits spatial modulation such that the superconductivity naturally disaggregates into two-leg or three-leg superconducting stripes separated by non-superconducting blocks. Our work provides a promising scenario of emergent superconducting stripes in homogeneous two-dimensional systems and reveals unexpectedly rich physics in two-orbital superconductors for future materials design. |
| title | Emergent superconducting stripes in two-orbital superconductors |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2508.14632 |