• 文献标题:   Graphene on TaC: Air tight protection of a superconducting surface
  • 文献类型:   Article
  • 作  者:   HUDER L, DE LAISSARDIERE GT, LAPERTOT G, JANSEN AGM, CHAPELIER C, RENARD VT
  • 作者关键词:  
  • 出版物名称:   CARBON
  • ISSN:   0008-6223 EI 1873-3891
  • 通讯作者地址:   Univ Grenoble Alpes
  • 被引频次:   0
  • DOI:   10.1016/j.carbon.2018.09.003
  • 出版年:   2018

▎ 摘  要

We report on the fabrication of a clean, stable in room atmosphere and superconducting surface consisting of graphene on tantalum carbide (TaC) obtained by high-temperature annealing of a tantalum thin film on SiC. Low temperature scanning tunnelling spectroscopy reveals that the surface is superconducting with a superconducting order parameter up to 1.6 meV. In addition, atomically-resolved imaging establishes the chemical inertness of the surface. This result is achieved because few graphene layers protect the surface superconductivity of the buried superconducting TaC formed during the high-temperature annealing. (C) 2018 Elsevier Ltd. All rights reserved.