Modulating the Electrical Transport in Superconducting NbC Crystals by Fractal Morphology

doi:10.1021/acsami.4c13602

IMR OpenIR

	Modulating the Electrical Transport in Superconducting NbC Crystals by Fractal Morphology
	Fu, Yunqi 1,2; Sun, Su 3,4; Hao, Meng 1,2; Wang, Qiang 3,4; Liu, Zhibo 3,4; Xu, Chuan 3,4; Cheng, Hui-Ming 3,4,5; Ren, Wencai 3,4; Kang, Ning 1,2,6
通讯作者	Xu, Chuan(xuc@imr.ac.cn) ; Ren, Wencai(wcren@imr.ac.cn) ; Kang, Ning(nkang@pku.edu.cn)
	2024-10-28
发表期刊	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
卷号	16 期号:44 页码:60865-60873
摘要	The self-similar fractal morphology mediated by nonequilibrium processes is widely observed in low-dimensional materials grown by various techniques. Understanding how these fractal geometries affect the physical and chemical properties of materials and devices is crucial for both fundamental studies and various applications. In particular, the interplay between superconducting phase fluctuations and disorder can give rise to intriguing phenomena depending on the dimensionality. However, current experimental studies on low-dimensional superconductors are limited to two- and one-dimensional systems, leaving fractional dimensional systems largely unexplored. Here, we use chemical vapor deposition to successfully synthesize ultrathin NbC crystals with a well-defined fractal geometry at the nanoscale. By performing electrical transport measurements, we find that both the superconducting and normal-state properties are strongly affected in the fractal samples, where the intrinsic and geometric disorder is induced. In contrast to the 2D crystal, the fractal NbC crystals show a significant low-temperature resistive upturn before the onset of superconducting transition, which can be attributed to the disorder-enhanced electron-electron interaction effect. From transport data analysis, we demonstrate that the superconducting transition in NbC is correlated to the strength of disorder and the fractional dimensions, revealing that nanoscale fractal structures can significantly modify the electronic properties of low-dimensional superconductors. Our work paves the way for the explorations of mesoscopic transport and intriguing superconducting phenomena in fractional dimensions.
关键词	superconductivity fractal morphology crystallinesuperconductors transition metal carbides electronictransport phase transition
资助者	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Innovation Program for Quantum Science and Technology ; Strategic Priority Research Program of Chinese Academy of Sciences ; Institute of Metal Research, Chinese Academy of Sciences
DOI	10.1021/acsami.4c13602
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[12374035] ; National Natural Science Foundation of China[11974026] ; National Natural Science Foundation of China[52122202] ; National Natural Science Foundation of China[52188101] ; National Natural Science Foundation of China[2021ZD0302600] ; Innovation Program for Quantum Science and Technology[XDB30000000] ; Strategic Priority Research Program of Chinese Academy of Sciences[2019000178] ; Institute of Metal Research, Chinese Academy of Sciences
WOS研究方向	Science & Technology - Other Topics ; Materials Science
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:001344113100001
出版者	AMER CHEMICAL SOC
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191054
专题	中国科学院金属研究所
通讯作者	Xu, Chuan; Ren, Wencai; Kang, Ning
作者单位	1.Peking Univ, Sch Elect, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China 2.Peking Univ, Ctr Carbon based Elect, Sch Elect, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 5.Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518055, Peoples R China 6.Hefei Natl Lab, Hefei 230088, Peoples R China
推荐引用方式 GB/T 7714	Fu, Yunqi,Sun, Su,Hao, Meng,et al. Modulating the Electrical Transport in Superconducting NbC Crystals by Fractal Morphology[J]. ACS APPLIED MATERIALS & INTERFACES,2024,16(44):60865-60873.
APA	Fu, Yunqi.,Sun, Su.,Hao, Meng.,Wang, Qiang.,Liu, Zhibo.,...&Kang, Ning.(2024).Modulating the Electrical Transport in Superconducting NbC Crystals by Fractal Morphology.ACS APPLIED MATERIALS & INTERFACES,16(44),60865-60873.
MLA	Fu, Yunqi,et al."Modulating the Electrical Transport in Superconducting NbC Crystals by Fractal Morphology".ACS APPLIED MATERIALS & INTERFACES 16.44(2024):60865-60873.