Chiral pair density waves with residual Fermi arcs in RbV3Sb5
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arXiv
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| Autori principali: | , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866915108975804416 |
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| author | Yan, Xiao-Yu Deng, Hanbin Yang, Tianyu Liu, Guowei Song, Wei Miao, Hu Lei, Hechang Wang, Shuo Lin, Ben-Chuan Qin, Hailang Yin, Jia-Xin |
| author_facet | Yan, Xiao-Yu Deng, Hanbin Yang, Tianyu Liu, Guowei Song, Wei Miao, Hu Lei, Hechang Wang, Shuo Lin, Ben-Chuan Qin, Hailang Yin, Jia-Xin |
| contents | The chiral 2 by 2 charge order has been reported and confirmed in the kagome superconductor RbV3Sb5, while its interplay with superconductivity remains elusive owing to its lowest superconducting transition temperature Tc of about 0.85K among the AV3Sb5 family (A=K, Rb, Cs) that severely challenges electronic spectroscopic probes. Here, utilizing dilution-refrigerator-based scanning tunneling microscopy (STM) down to 30mK, we observe chiral 2 by 2 pair density waves with residual Fermi arcs in RbV3Sb5. We find a superconducting gap of 150μeV with substantial residual in-gap states. The spatial distribution of this gap exhibits chiral 2 by 2 modulations, signaling a chiral pair density wave (PDW). Our quasi-particle interference imaging of the zero-energy residual states further reveals arc-like patterns. We discuss the relation of the gap modulations with the residual Fermi arcs under the space-momentum correspondence between PDW and Bogoliubov Fermi states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_03352 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Chiral pair density waves with residual Fermi arcs in RbV3Sb5 Yan, Xiao-Yu Deng, Hanbin Yang, Tianyu Liu, Guowei Song, Wei Miao, Hu Lei, Hechang Wang, Shuo Lin, Ben-Chuan Qin, Hailang Yin, Jia-Xin Superconductivity The chiral 2 by 2 charge order has been reported and confirmed in the kagome superconductor RbV3Sb5, while its interplay with superconductivity remains elusive owing to its lowest superconducting transition temperature Tc of about 0.85K among the AV3Sb5 family (A=K, Rb, Cs) that severely challenges electronic spectroscopic probes. Here, utilizing dilution-refrigerator-based scanning tunneling microscopy (STM) down to 30mK, we observe chiral 2 by 2 pair density waves with residual Fermi arcs in RbV3Sb5. We find a superconducting gap of 150μeV with substantial residual in-gap states. The spatial distribution of this gap exhibits chiral 2 by 2 modulations, signaling a chiral pair density wave (PDW). Our quasi-particle interference imaging of the zero-energy residual states further reveals arc-like patterns. We discuss the relation of the gap modulations with the residual Fermi arcs under the space-momentum correspondence between PDW and Bogoliubov Fermi states. |
| title | Chiral pair density waves with residual Fermi arcs in RbV3Sb5 |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2408.03352 |