Transport through a network of two-dimensional NbC superconducting crystals connected via weak links

doi:10.1103/PhysRevB.101.115422

IMR OpenIR

	Transport through a network of two-dimensional NbC superconducting crystals connected via weak links
	Hao, Meng 1,2; Xu, Chuan 3; Liu, Zhen 1,2; Wang, Cheng 1,2; Liu, Zhibo 3; Sun, Su 3; Cheng, Hui-Ming 3; Ren, Wencai 3; Kang, Ning 1,2
通讯作者	Ren, Wencai(wcren@imr.ac.cn) ; Kang, Ning(nkang@pku.edu.cn)
	2020-03-23
发表期刊	PHYSICAL REVIEW B
ISSN	2469-9950
卷号	101 期号:11 页码:7
摘要	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.
资助者	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
收录类别	SCI
语种	英语
资助项目	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研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000521084000003
出版者	AMER PHYSICAL SOC
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/137903
专题	中国科学院金属研究所
通讯作者	Ren, Wencai; Kang, Ning
作者单位	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
推荐引用方式 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.