Anomalous enhancement of charge density wave in kagome superconductor CsV3Sb5 approaching the 2D limit
文献类型：期刊论文
| 作者 | Song, Boqin; Ying, Tianping1; Wu, Xianxin2; Xia, Wei3,4; Yin, Qiangwei5,6; Zhang, Qinghua1; Song, Yanpeng1; Yang, Xiaofan; Guo, Jiangang1; Gu, Lin1 |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2023 |
| 卷号 | 14期号:1页码:2492 |
| 关键词 | PHASE LATTICE STATE ORDER |
| DOI | 10.1038/s41467-023-38257-3 |
| 英文摘要 | The recently discoveredkagomemetals AV(3)Sb(5) (A = Cs, Rb, K) exhibit a variety of intriguing phenomena, such as a charge density wave (CDW) with timereversal symmetry breaking and possible unconventional superconductivity. Here, we report a rare non-monotonic evolution of the CDW temperature (T-CDW) with the reduction of flake thickness approaching the atomic limit, and the superconducting transition temperature (T-c) features an inverse variation with T-CDW. T-CDW initially decreases to aminimum value of 72 K at 27 layers and then increases abruptly, reaching a record-high value of 120 K at 5 layers. Raman scatteringmeasurements reveal aweakened electron-phonon coupling with the reduction of sample thickness, suggesting that a crossover from electron-phonon coupling to dominantly electronic interactions could account for the non-monotonic thickness dependence of T-CDW. Our work demonstrates the novel effects of dimension reduction and carrier doping on quantum states in thin flakes and provides crucial insights into the complex mechanism of the CDW order in the family of AV(3)Sb(5) kagome metals. |
| 学科主题 | Science & Technology - Other Topics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27926]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 5.ShanghaiTech Lab Topol Phys, Shanghai 201210, Peoples R China 6.Renmin Univ China, Lab Neutron Scattering, Dept Phys, Beijing 100872, Peoples R China 7.Renmin Univ China, Beijing Key Lab Optoelect Funct Mat MicroNano Dev, Dept Phys, Beijing 100872, Peoples R China 8.Schnyder, Andreas P.] Max Planck Inst Festkorperforsch, Heisenbergstr 1, D-70569 Stuttgart, Germany 9.Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China 10.Shanghai Res Ctr QuantumSci, Shanghai 201315, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Boqin,Ying, Tianping,Wu, Xianxin,et al. Anomalous enhancement of charge density wave in kagome superconductor CsV3Sb5 approaching the 2D limit[J]. NATURE COMMUNICATIONS,2023,14(1):2492. |
| APA | Song, Boqin.,Ying, Tianping.,Wu, Xianxin.,Xia, Wei.,Yin, Qiangwei.,...&Li, Shiyan.(2023).Anomalous enhancement of charge density wave in kagome superconductor CsV3Sb5 approaching the 2D limit.NATURE COMMUNICATIONS,14(1),2492. |
| MLA | Song, Boqin,et al."Anomalous enhancement of charge density wave in kagome superconductor CsV3Sb5 approaching the 2D limit".NATURE COMMUNICATIONS 14.1(2023):2492. |
入库方式： OAI收割
来源：理论物理研究所
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