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Coexistence of Quasi-two-dimensional Superconductivity and Tunable Kondo Lattice in a van der Waals Superconductor | |
2022-05-25 | |
发表期刊 | CHINESE PHYSICS LETTERS (IF:3.5[JCR-2023],2.1[5-Year]) |
ISSN | 0256-307X |
EISSN | 1741-3540 |
卷号 | 39期号:7页码:077401 |
发表状态 | 已发表 |
DOI | 10.1088/0256-307X/39/7/077401 |
摘要 | Realization of Kondo lattice in superconducting van der Waals materials not only provides a unique opportunity for tuning the Kondo lattice behavior by electrical gating or intercalation, but also is helpful for further understanding the heavy fermion superconductivity. Here we report a low-temperature and vector-magnetic-field scanning tunneling microscopy and spectroscopy study on a superconducting compound (4Hb-TaS2) with alternate stacking of 1T-TaS2 and 1H-TaS2 layers. We observe the quasi-two-dimensional superconductivity in the 1H-TaS2 layer with anisotropic response to the in-plane and out-of-plane magnetic fields. In the 1T-TaS2 layer, we detect the Kondo resonance peak that results from the Kondo screening of the unpaired electrons in the Star-of-David clusters. We also find that the intensity of the Kondo resonance peak is sensitive to its relative position with the Fermi level, and it can be significantly enhanced when it is further shifted towards the Fermi level by evaporating Pb atoms onto the 1T-TaS2 surface. Our results not only are important for fully understanding the electronic properties of 4Hb-TaS2, but also pave the way for creating tunable Kondo lattice in the superconducting van der Waals materials. |
URL | 查看原文 |
收录类别 | SCI ; SCIE ; EI |
语种 | 英语 |
资助项目 | National Key R&D Program of China[2020YFA0309602] ; National Natural Science Foundation of China[11874042,12004250,12004251,11674326,11774351, |
WOS研究方向 | Physics |
WOS类目 | Physics, Multidisciplinary |
WOS记录号 | WOS:000816877800001 |
出版者 | IOP Publishing Ltd |
引用统计 | 正在获取...
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文献类型 | 期刊论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/203439 |
专题 | 物质科学与技术学院_博士生 物质科学与技术学院_PI研究组_颜世超组 物质科学与技术学院_PI研究组_李军组 物质科学与技术学院_PI研究组_张石磊组 |
通讯作者 | Sun, Yuping; Yan, Shichao |
作者单位 | 1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 2.Chinese Acad Sci, HFIPS, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 4.ShanghaiTech Univ, ShanghaiTech Lab Topol Phys, Shanghai 201210, Peoples R China 5.Chinese Acad Sci, High Field Magnet Lab, HFIPS, Hefei 230031, Peoples R China 6.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China |
第一作者单位 | 物质科学与技术学院 |
通讯作者单位 | 物质科学与技术学院; 上海科技大学 |
第一作者的第一单位 | 物质科学与技术学院 |
推荐引用方式 GB/T 7714 | Shen, Shiwei,Qin, Tian,Gao, Jingjing,et al. Coexistence of Quasi-two-dimensional Superconductivity and Tunable Kondo Lattice in a van der Waals Superconductor[J]. CHINESE PHYSICS LETTERS,2022,39(7):077401. |
APA | Shen, Shiwei.,Qin, Tian.,Gao, Jingjing.,Wen, Chenhaoping.,Wang, Jinghui.,...&Yan, Shichao.(2022).Coexistence of Quasi-two-dimensional Superconductivity and Tunable Kondo Lattice in a van der Waals Superconductor.CHINESE PHYSICS LETTERS,39(7),077401. |
MLA | Shen, Shiwei,et al."Coexistence of Quasi-two-dimensional Superconductivity and Tunable Kondo Lattice in a van der Waals Superconductor".CHINESE PHYSICS LETTERS 39.7(2022):077401. |
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