title: Construction of 2D atomic crystals on transition metal surfaces: graphene, silicene, and hafnene.
abstract: The synthesis and structures of graphene on Ru(0001) and Pt(111), silicene on Ag(111) and Ir(111) and the honeycomb hafnium lattice on Ir(111) are reviewed. Epitaxy on a transition metal (TM) substrate is a pro-mising method to produce a variety of two dimensional (2D) atomic crystals which potentially can be used in next generation electronic devices. This method is particularly valuable in the case of producing 2D materials that do not exist in 3D forms, for instance, silicene. Based on the intensive investigations of epitaxial graphene on TM in recent years, it is known that the quality of graphene is affected by many factors, including the interaction between the 2D material overlayer and the substrate, the lattice mismatch, the nucleation density at the early stage of growth. It is found that these factors also apply to many other epitaxial 2D crystals on TM. The knowledge from the reviewed systems will shine light on the design and synthesis of new 2D crystals with novel properties.
authors.affiliation: Institute of Physics & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China; Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195, Berlin, Germany.
authors.forename: Yi
authors.initials: Y
authors.lastname: Pan
authors.forename: Lizhi
authors.initials: L
authors.lastname: Zhang
authors.forename: Li
authors.initials: L
authors.lastname: Huang
authors.forename: Linfei
authors.initials: L
authors.lastname: Li
authors.forename: Lei
authors.initials: L
authors.lastname: Meng
authors.forename: Min
authors.initials: M
authors.lastname: Gao
authors.forename: Qing
authors.initials: Q
authors.lastname: Huan
authors.forename: Xiao
authors.initials: X
authors.lastname: Lin
authors.forename: Yeliang
authors.initials: Y
authors.lastname: Wang
authors.forename: Shixuan
authors.initials: S
authors.lastname: Du
authors.forename: Hans-Joachim
authors.initials: HJ
authors.lastname: Freund
authors.forename: Hong-Jun
authors.initials: HJ
authors.lastname: Gao
keywords: 2D atomic crystals; graphene; hafnium; honeycomb lattice; silicene