Tailorable graphene-based superconducting films via self-assembly and in-situ doping. (November 2019)

• Record Type: Journal Article
• Authors: Liang, Hui; Zang, Xiaoling; Liu, Yingjun; Chen, Dong; Xu, Zhen; Gao, Weiwei; Wang, Xusheng; Gao, Chao; Chen, Genfu; Xue, Mianqi
• Is Part Of: Carbon. Volume 152(2019)
• Page Start: 527
• Page End: 531
• Publication Date: 2019-11
• Subjects: Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2019.06.063
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: It looks like graphene is ready for production, at least for new applications which need to use its unique properties. As doped-graphene is a typical two-dimensional (2D) superconductor, graphene has showed the possibilities for practical applications besides the significant meaning in studying relevant physical problems. We report a novel development in fabricating large-area graphene-based superconducting film (GSF) via self-assembly and in-situ calcium (Ca) intercalation. As-fabricated GSF can be tailored into puzzle-sized and arbitrary-shaped superconducting pieces, demonstrating outstanding processability. GSF shows a superconducting transition at ∼11 K and an upper critical field Hc2 at 9.85 kOe. Especially, GSF exists stably for dozens of minutes in the atmosphere. Given these advantages, GSF points out a new application direction of graphene and provides a platform for studying 2D superconductors. The self-assembly and in-situ doping method also pave a new way for the application of free-standing 2D superconductors. Graphical abstract: Image 109