• 文献标题:   Growth of atomically thick transition metal sulfide films on graphene/6H-SIC(0001) by molecular beam epitaxy
  • 文献类型:   Article
  • 作  者:   LIN HC, HUANG WT, ZHAO K, LIAN CS, DUAN WH, CHEN X, JI SH
  • 作者关键词:   twodimensional 2d material, molecular beam epitaxy, charge density wave, nbs2, tas2, fes
  • 出版物名称:   NANO RESEARCH
  • ISSN:   1998-0124 EI 1998-0000
  • 通讯作者地址:   Tsinghua Univ
  • 被引频次:   8
  • DOI:   10.1007/s12274-018-2054-4
  • 出版年:   2018

▎ 摘  要

We report the growth and characterization of atomically thick NbS2, TaS2, and FeS films on a 6H-SiC(0001) substrate terminated with monolayer or bilayer epitaxial graphene. The crystal and electronic structures are studied by scanning tunneling microscopy and reflection high-energy electron diffraction. The NbS2 monolayer is solely in the 2H structure, while the TaS2 monolayer contains both 1T and 2H structures. Charge-density waves are observed in all phases. For the FeS films, the tetragonal structure coexists with the hexagonal one and no superconductivity is observed.