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ShanghaiTech University Knowledge Management System
| Evidence chain for time-reversal symmetry-breaking kagome superconductivity | |
Deng, Hanbin1; Liu, Guowei1; Guguchia, Z.2; Yang, Tianyu1; Liu, Jinjin3,4; Wang, Zhiwei3,4; Xie, Yaofeng5; Shao, Sen6; Ma, Haiyang7; Liege, William8; Bourdarot, Frederic9; Yan, Xiao-Yu1; Qin, Hailang7; Mielke Iii, C.2; Khasanov, R.2; Luetkens, H.2; Wu, Xianxin10; Chang, Guoqing6; Liu, Jianpeng11  ; Christensen, Morten Holm12; Kreisel, Andreas12; Andersen, Brian Moller12; Huang, Wen13; Zhao, Yue1; Bourges, Philippe8; Yao, Yugui4; Dai, Pengcheng5; Yin, Jia-Xin1,7
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| 2024-08-06 | |
| 状态 | 已发表 |
| 摘要 | Superconductivity and magnetism are antagonistic quantum matter, while their intertwining has long been considered in frustrated-lattice systems1-3. In this work, we utilize scanning tunneling microscopy and muon spin resonance to discover time-reversal symmetry-breaking superconductivity in kagome metal Cs(V,Ta)3Sb5, where the Cooper pairing exhibits magnetism and is modulated by it. In the magnetic channel, we observe spontaneous internal magnetism in a full-gap superconducting state. Under perturbations of inverse magnetic fields, we detect a time-reversal asymmetrical interference of Bogoliubov quasi-particles at a circular vector. At this vector, the pairing gap spontaneously modulates, which is distinct from pair density waves occurring at a point vector and consistent with the theoretical proposal of unusual interference effect under time-reversal symmetry-breaking. The correlation between internal magnetism, Bogoliubov quasi-particles, and pairing modulation provides a chain of experimental clues for time-reversal symmetry-breaking kagome superconductivity. |
| DOI | arXiv:2408.02898 |
| 相关网址 | 查看原文 |
| 出处 | Arxiv |
| WOS记录号 | PPRN:91270162 |
| WOS类目 | Physics, Condensed Matter |
| 文献类型 | 预印本 |
| 条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/424427 |
| 专题 | 物质科学与技术学院 物质科学与技术学院_PI研究组_刘健鹏组 |
| 通讯作者 | Wang, Zhiwei; Yin, Jia-Xin |
| 作者单位 | 1.Southern Univ Sci & Technol, Dept Phys, Shenzhen, Guangdong, Peoples R China 2.Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland 3.Beijing Inst Technol, Ctr Quantum Phys, Sch Phys, Key Lab Adv Optoelect Quantum Architecture & Measurement,MOE, Beijing, Peoples R China 4.Beijing Inst Technol, Beijing Key Lab Nanophoton & Ultrafine Optoelect Syst, Beijing, Peoples R China 5.Rice Univ, Dept Phys & Astron, Houston, TX 77005, USA 6.Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore 7.Quantum Sci Ctr Guangdong Hong Kong Macao Greater Bay Area Guangdong, Shenzhen, Peoples R China 8.Univ Paris Saclay, CNRS CEA, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France 9.Univ Grenoble Alpes, CEA, INAC, MEM MDN, F-38000 Grenoble, France 10.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing, Peoples R China 11.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 12.Univ Copenhagen, Niels Bohr Inst, DK-2200 Copenhagen, Denmark 13.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Deng, Hanbin,Liu, Guowei,Guguchia, Z.,et al. Evidence chain for time-reversal symmetry-breaking kagome superconductivity. 2024. |
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