Switchable chiral 2x2 pair density wave in pure CsV3Sb5
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arXiv
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| Autori principali: | , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866910061030277120 |
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| author | Song, Wei Yan, Xiao-Yu Yu, Xin Wu, Desheng Hu, Deng Qin, Hailang Liu, Guowei Deng, Hanbin Gao, Chao Yan. Muwei Wang, Zhiwei Wu, Rui Yin, Jia-Xin |
| author_facet | Song, Wei Yan, Xiao-Yu Yu, Xin Wu, Desheng Hu, Deng Qin, Hailang Liu, Guowei Deng, Hanbin Gao, Chao Yan. Muwei Wang, Zhiwei Wu, Rui Yin, Jia-Xin |
| contents | We investigate electron pairing in a super clean kagome superconductor CsV3Sb5 with a residual resistivity ratio (RRR) of 290. By using the dilution-refrigerator-based scanning tunneling microscopy (STM) at the Synergetic Extreme Condition User Facility (SECUF), we find that the pairing gap exhibits chiral 2x2 modulations, and their chirality can be controlled by magnetic field training. We introduce nonmagnetic impurities to observe the complete suppression of 2x2 pairing modulations in presence of persistent 2x2 charge order. This nonmagnetic pair-breaking effect provides phase-sensitive evidence for pair-density-wave (PDW) induced pairing modulations. Our results support switchable chiral 2x2 PDW in this super clean kagome superconductor. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_12730 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Switchable chiral 2x2 pair density wave in pure CsV3Sb5 Song, Wei Yan, Xiao-Yu Yu, Xin Wu, Desheng Hu, Deng Qin, Hailang Liu, Guowei Deng, Hanbin Gao, Chao Yan. Muwei Wang, Zhiwei Wu, Rui Yin, Jia-Xin Superconductivity We investigate electron pairing in a super clean kagome superconductor CsV3Sb5 with a residual resistivity ratio (RRR) of 290. By using the dilution-refrigerator-based scanning tunneling microscopy (STM) at the Synergetic Extreme Condition User Facility (SECUF), we find that the pairing gap exhibits chiral 2x2 modulations, and their chirality can be controlled by magnetic field training. We introduce nonmagnetic impurities to observe the complete suppression of 2x2 pairing modulations in presence of persistent 2x2 charge order. This nonmagnetic pair-breaking effect provides phase-sensitive evidence for pair-density-wave (PDW) induced pairing modulations. Our results support switchable chiral 2x2 PDW in this super clean kagome superconductor. |
| title | Switchable chiral 2x2 pair density wave in pure CsV3Sb5 |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2510.12730 |