| Transport through a network of two-dimensional NbC superconducting crystals connected via weak links | |
| Hao, Meng1,2; Xu, Chuan3; Liu, Zhen1,2; Wang, Cheng1,2; Liu, Zhibo3; Sun, Su3; Cheng, Hui-Ming3; Ren, Wencai3; Kang, Ning1,2 | |
| Corresponding Author | Ren, Wencai(wcren@imr.ac.cn) ; Kang, Ning(nkang@pku.edu.cn) |
| 2020-03-23 | |
| Source Publication | PHYSICAL REVIEW B
 |
| ISSN | 2469-9950 |
| Volume | 101Issue:11Pages:7 |
| Abstract | Recent progresses in the growth and fabrication techniques for preparing crystalline two-dimensional (2D) superconductors have stimulated intense interest in the studies of the electronic properties of these systems. Here we investigate the superconducting transport properties based on chemical vapor deposition-grown thin NbC crystals consisting of network structures. The 2D character of the superconductivity in individual NbC crystals is revealed by examining the angular dependence of magnetotransport measurements. At low temperatures, the samples show nonmonotonic double-step superconducting transitions as a function of temperature and magnetic field. We demonstrate that the observed transport characteristics can be understood in terms of coupled Josephson junctions forming between isolated NbC crystals, including the effects of Josephson and quasiparticle tunneling. In particular, detailed analysis of the magnetic field-driven transition suggests the existence of quantum flux-creep regime at low temperatures and small magnetic fields in such thin NbC superconducting crystals. Our work underlines the importance of the morphology on the transport properties of 2D superconducting crystals, providing a comprehensive understanding of crystalline 2D superconductors. |
| Funding Organization | National Natural Science Foundation of China ; National Key Research and Development Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association of Chinese Academy of Sciences |
| DOI | 10.1103/PhysRevB.101.115422 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[11774005] ; National Natural Science Foundation of China[11974026] ; National Natural Science Foundation of China[51521091] ; National Natural Science Foundation of China[51802314] ; National Key Research and Development Program of China[2016YFA0300601] ; National Key Research and Development Program of China[2017YFA0303304] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB30000000] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2018223] |
| WOS Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| WOS ID | WOS:000521084000003 |
| Publisher | AMER PHYSICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/137903 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Ren, Wencai; Kang, Ning |
| Affiliation | 1.Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China 2.Peking Univ, Dept Elect, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Hao, Meng,Xu, Chuan,Liu, Zhen,et al. Transport through a network of two-dimensional NbC superconducting crystals connected via weak links[J]. PHYSICAL REVIEW B,2020,101(11):7. |
| APA | Hao, Meng.,Xu, Chuan.,Liu, Zhen.,Wang, Cheng.,Liu, Zhibo.,...&Kang, Ning.(2020).Transport through a network of two-dimensional NbC superconducting crystals connected via weak links.PHYSICAL REVIEW B,101(11),7. |
| MLA | Hao, Meng,et al."Transport through a network of two-dimensional NbC superconducting crystals connected via weak links".PHYSICAL REVIEW B 101.11(2020):7. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment