Superhigh Uniform Magnetic Cr Substitution in a 2D Mo2C Superconductor for a Macroscopic-Scale Kondo Effect

doi:10.1002/adma.202002825

IMR OpenIR

	Superhigh Uniform Magnetic Cr Substitution in a 2D Mo2C Superconductor for a Macroscopic-Scale Kondo Effect
	Xu, Chuan 1; Liu, Zhen 2,3; Zhang, Zongyuan 4,5; Liu, Zhibo 1; Li, Jingyin 2,3; Pan, Minghu 4,6; Kang, Ning 2,3; Cheng, Hui-Ming 1,7,8; Ren, Wencai 1,6
通讯作者	Pan, Minghu(minghupan@hust.edu.cn) ; Kang, Ning(nkang@pku.edu.cn) ; Ren, Wencai(wcren@imr.ac.cn)
	2020-08-09
发表期刊	ADVANCED MATERIALS
ISSN	0935-9648
页码	10
摘要	Substitutional doping provides an effective strategy to tailor the properties of 2D materials, but it remains an open challenge to achieve tunable uniform doping, especially at high doping level. Here, uniform lattice substitution of a 2D Mo2C superconductor by magnetic Cr atoms with controlled concentration up to approximate to 46.9 at% by chemical vapor deposition and a specifically designed Cu/Cr/Mo trilayer growth substrate is reported. The concentration of Cr atoms can be easily tuned by simply changing the thickness of the Cr layer, and the samples retain the original structure of 2D Mo2C even at a very high Cr concentration. The controlled uniform Cr doping enables the tuning of the competition of the 2D superconductor and the Kondo effect across the whole sample. Transport measurements show that with increasing Cr concentration, the superconductivity of the 2D Cr-doped Mo2C crystals disappears along with the emergence of the Kondo effect, and the Kondo temperature increases monotonously. Using scanning tunneling microscopy/spectroscopy, the mechanism of the doping level effect on the interplay and evolution between superconductivity and the Kondo effect is revealed. This work paves a new way for the synthesis of 2D materials with widely tunable doping levels, and provides new understandings on the interplay between superconductivity and magnetism in the 2D limit.
关键词	2D materials Kondo effect magnetic doping superconductivity uniform composition
资助者	National Science Foundation of China ; Chinese Academy of Sciences ; Ministry of Science and Technology of China ; LiaoNing Revitalization Talents Program ; SYNL-T.S. K Research Fellowship ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Program for Guangdong Introducing Innovative and Enterpreneurial Teams ; Economic, Trade and Information Commission of Shenzhen Municipality ; Development and Reform Commission of Shenzhen Municipality
DOI	10.1002/adma.202002825
收录类别	SCI
语种	英语
资助项目	National Science Foundation of China[51325205] ; National Science Foundation of China[51290273] ; National Science Foundation of China[51521091] ; National Science Foundation of China[11574095] ; National Science Foundation of China[91745115] ; National Science Foundation of China[11774005] ; National Science Foundation of China[51802314] ; National Science Foundation of China[51861135201] ; Chinese Academy of Sciences[XDB30000000] ; Chinese Academy of Sciences[ZDBS-LY-JSC027] ; Ministry of Science and Technology of China[2016YFA0200101] ; Ministry of Science and Technology of China[2016YFA0300601] ; LiaoNing Revitalization Talents Program[XLYC1808013] ; SYNL-T.S. K Research Fellowship ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2018223] ; Program for Guangdong Introducing Innovative and Enterpreneurial Teams[2017ZT07C341] ; Economic, Trade and Information Commission of Shenzhen Municipality[201901171523] ; Development and Reform Commission of Shenzhen Municipality
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000557379900001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：11[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/321006/140097
专题	中国科学院金属研究所
通讯作者	Pan, Minghu; Kang, Ning; Ren, Wencai
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China 3.Peking Univ, Dept Elect, Beijing 100871, Peoples R China 4.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China 5.Anhui Univ, Key Lab Struct & Funct Regulat Hybrid Mat, Minist Educ, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China 6.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710119, Peoples R China 7.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 8.Tsinghua Univ, Shenzhen Geim Graphene Ctr, Tsinghua Berkeley Shenzhen Inst TBSI, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Xu, Chuan,Liu, Zhen,Zhang, Zongyuan,et al. Superhigh Uniform Magnetic Cr Substitution in a 2D Mo2C Superconductor for a Macroscopic-Scale Kondo Effect[J]. ADVANCED MATERIALS,2020:10.
APA	Xu, Chuan.,Liu, Zhen.,Zhang, Zongyuan.,Liu, Zhibo.,Li, Jingyin.,...&Ren, Wencai.(2020).Superhigh Uniform Magnetic Cr Substitution in a 2D Mo2C Superconductor for a Macroscopic-Scale Kondo Effect.ADVANCED MATERIALS,10.
MLA	Xu, Chuan,et al."Superhigh Uniform Magnetic Cr Substitution in a 2D Mo2C Superconductor for a Macroscopic-Scale Kondo Effect".ADVANCED MATERIALS (2020):10.