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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2601.13063 |
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| _version_ | 1866914383820488704 |
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| author | Zhong, Ruixia Wang, Qi Yang, Zhongzheng Zheng, Fanbang Li, Wenhui Qi, Yanpeng Yan, Shichao |
| author_facet | Zhong, Ruixia Wang, Qi Yang, Zhongzheng Zheng, Fanbang Li, Wenhui Qi, Yanpeng Yan, Shichao |
| contents | Here, we report a scanning tunneling microscopy study on an s-wave superconductor NaAlSi, revealing the coexistence of stripe order and superconductivity. This stripe order manifests as a unidirectional spatial charge modulation with a commensurate period of four times the lattice constant. This modulation undergoes a phase shift in the differential conductance maps under opposite bias voltages, while its period remains approximately constant over an energy range of $\pm$50 meV. These features suggest that this stripe is likely a static charge order. Furthermore, we find that the stripe order imposes a periodic modulation on the intensity of the superconducting coherence peaks. This work provides new perspectives on the intricate interplay between stripe order and s-wave superconductivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_13063 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Coexistence of stripe order and superconductivity in NaAlSi Zhong, Ruixia Wang, Qi Yang, Zhongzheng Zheng, Fanbang Li, Wenhui Qi, Yanpeng Yan, Shichao Superconductivity Here, we report a scanning tunneling microscopy study on an s-wave superconductor NaAlSi, revealing the coexistence of stripe order and superconductivity. This stripe order manifests as a unidirectional spatial charge modulation with a commensurate period of four times the lattice constant. This modulation undergoes a phase shift in the differential conductance maps under opposite bias voltages, while its period remains approximately constant over an energy range of $\pm$50 meV. These features suggest that this stripe is likely a static charge order. Furthermore, we find that the stripe order imposes a periodic modulation on the intensity of the superconducting coherence peaks. This work provides new perspectives on the intricate interplay between stripe order and s-wave superconductivity. |
| title | Coexistence of stripe order and superconductivity in NaAlSi |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2601.13063 |