High-T-c superconductivity in ultrathin Bi2Sr2CaCu2O8+x down to half-unit-cell thickness by protection with graphene

doi:10.1038/ncomms6708

	High-T-c superconductivity in ultrathin Bi2Sr2CaCu2O8+x down to half-unit-cell thickness by protection with graphene
	Jiang, Da 1; Hu, Tao 1; You, Lixing 1; Li, Qiao 1; Li, Ang 1; Wang, Haomin 1; Mu, Gang 1; Chen, Zhiying 1; Zhang, Haoran 1; Yu, Guanghui 1; Zhu, Jie 2; Sun, Qiujuan 1,3; Lin, Chengtian 4; Xiao, Hong 5; Xie, Xiaoming1,6 ; Jiang, Mianheng1,6
	2014-12
发表期刊	NATURE COMMUNICATIONS (IF:14.7[JCR-2023],16.1[5-Year])
ISSN	2041-1723
卷号	5
发表状态	已发表
DOI	10.1038/ncomms6708
摘要	High-T-c superconductors confined to two dimension exhibit novel physical phenomena, such as superconductor-insulator transition. In the Bi2Sr2CaCu2O8+x (Bi2212) model system, despite extensive studies, the intrinsic superconducting properties at the thinness limit have been difficult to determine. Here, we report a method to fabricate high quality single-crystal Bi2212 films down to half-unit-cell thickness in the form of graphene/Bi2212 van der Waals heterostructure, in which sharp superconducting transitions are observed. The heterostructure also exhibits a nonlinear current-voltage characteristic due to the Dirac nature of the graphene band structure. More interestingly, although the critical temperature remains essentially the same with reduced thickness of Bi2212, the slope of the normal state T-linear resistivity varies by a factor of 4-5, and the sheet resistance increases by three orders of magnitude, indicating a surprising decoupling of the normal state resistance and superconductivity. The developed technique is versatile, applicable to investigate other two-dimensional (2D) superconducting materials.
收录类别	SCI
语种	英语
资助项目	Ministry of Science and Technology of China[2011CBA00107] ; Ministry of Science and Technology of China[2012CB921302]
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000347229300004
出版者	NATURE PUBLISHING GROUP
WOS关键词	INSULATOR-TRANSITION ; FILMS ; BEHAVIOR ; HETEROSTRUCTURES ; SUPERLATTICES ; LA2-XSRXCUO4 ; ENHANCEMENT ; RESISTIVITY ; DEPENDENCE ; INTERFACES
原始文献类型	Article
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/2358
专题	物质科学与技术学院_特聘教授组_谢晓明组物质科学与技术学院
通讯作者	Jiang, Da
作者单位	1.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China 2.Tongji Univ, Inst Precis Opt Engn, Sch Phys Sci & Engn, Shanghai 200092, Peoples R China 3.Cent S Univ, Sch Phys & Elect, Changsha 410083, Hunan, Peoples R China 4.Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany 5.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China 6.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Da,Hu, Tao,You, Lixing,et al. High-T-c superconductivity in ultrathin Bi2Sr2CaCu2O8+x down to half-unit-cell thickness by protection with graphene[J]. NATURE COMMUNICATIONS,2014,5.
APA	Jiang, Da.,Hu, Tao.,You, Lixing.,Li, Qiao.,Li, Ang.,...&Jiang, Mianheng.(2014).High-T-c superconductivity in ultrathin Bi2Sr2CaCu2O8+x down to half-unit-cell thickness by protection with graphene.NATURE COMMUNICATIONS,5.
MLA	Jiang, Da,et al."High-T-c superconductivity in ultrathin Bi2Sr2CaCu2O8+x down to half-unit-cell thickness by protection with graphene".NATURE COMMUNICATIONS 5(2014).