Phase-sensitive evidence for 2x2 pair density wave in a kagome superconductor
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2025
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866910267834630144 |
|---|---|
| author | Yan, Xiao-Yu Liu, Guowei Deng, Hanbin Xu, Xitong Ma, Haiyang Qin, Hailang Zhang, Jun-Yi Zhao, Yuanyuan Zhao, Haitian Qu, Zhe Zhong, Yigui Okazaki, Kozo Zheng, Xiquan Peng, Yingying Guguchia, Zurab Wu, X. X. Wang, Qianghua Fan, X-H Song, Wei Gao, M-W Hohmann, Hendrik Durrnagel, Matteo Thomale, Ronny Yin, Jia-Xin |
| author_facet | Yan, Xiao-Yu Liu, Guowei Deng, Hanbin Xu, Xitong Ma, Haiyang Qin, Hailang Zhang, Jun-Yi Zhao, Yuanyuan Zhao, Haitian Qu, Zhe Zhong, Yigui Okazaki, Kozo Zheng, Xiquan Peng, Yingying Guguchia, Zurab Wu, X. X. Wang, Qianghua Fan, X-H Song, Wei Gao, M-W Hohmann, Hendrik Durrnagel, Matteo Thomale, Ronny Yin, Jia-Xin |
| contents | The pair-density-wave (PDW) exhibits periodic amplitude and sign modulations of the superconducting order parameter. Such a pairing state has been proposed to be sensitive to nonmagnetic scattering. In this work, we observe the nonmagnetic PDW-breaking effect in a kagome superconductor, using scanning tunneling microscopy. We observe 2x2 PDW induced by the coupling between charge order and superconductivity. The global PDW is substantially suppressed upon doping the kagome lattice with dilute isovalent nonmagnetic impurities, whereas the charge order and uniform superconductivity remain robust. Spatial correlation analysis further confirms that PDW is distinctly suppressed near dopants. We attribute the PDW suppression to a nonmagnetic PDW breaking effect, arising from phase sign modulation of PDW in the kagome d-orbital hosting Bogoliubov Fermi states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_10958 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Phase-sensitive evidence for 2x2 pair density wave in a kagome superconductor Yan, Xiao-Yu Liu, Guowei Deng, Hanbin Xu, Xitong Ma, Haiyang Qin, Hailang Zhang, Jun-Yi Zhao, Yuanyuan Zhao, Haitian Qu, Zhe Zhong, Yigui Okazaki, Kozo Zheng, Xiquan Peng, Yingying Guguchia, Zurab Wu, X. X. Wang, Qianghua Fan, X-H Song, Wei Gao, M-W Hohmann, Hendrik Durrnagel, Matteo Thomale, Ronny Yin, Jia-Xin Superconductivity The pair-density-wave (PDW) exhibits periodic amplitude and sign modulations of the superconducting order parameter. Such a pairing state has been proposed to be sensitive to nonmagnetic scattering. In this work, we observe the nonmagnetic PDW-breaking effect in a kagome superconductor, using scanning tunneling microscopy. We observe 2x2 PDW induced by the coupling between charge order and superconductivity. The global PDW is substantially suppressed upon doping the kagome lattice with dilute isovalent nonmagnetic impurities, whereas the charge order and uniform superconductivity remain robust. Spatial correlation analysis further confirms that PDW is distinctly suppressed near dopants. We attribute the PDW suppression to a nonmagnetic PDW breaking effect, arising from phase sign modulation of PDW in the kagome d-orbital hosting Bogoliubov Fermi states. |
| title | Phase-sensitive evidence for 2x2 pair density wave in a kagome superconductor |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2510.10958 |