• 文献标题:   Superlattice of resonators on monolayer graphene created by intercalated gold nanoclusters
  • 文献类型:   Article
  • 作  者:   CRANNEY M, VONAU F, PILLAI PB, DENYS E, AUBEL D, DE SOUZA MM, BENA C, SIMON L
  • 作者关键词:  
  • 出版物名称:   EPL
  • ISSN:   0295-5075
  • 通讯作者地址:   Inst Sci Mat Mulhouse IS2M LRC 7228 CNRS UHA
  • 被引频次:   20
  • DOI:   10.1209/0295-5075/91/66004
  • 出版年:   2010

▎ 摘  要

Here we report on a "new" type of ordering which allows to modify the electronic structure of a graphene monolayer (ML). We have intercalated small gold clusters between the top monolayer graphene and the buffer layer of epitaxial graphene. We show that these clusters perturb the quasiparticles on the ML graphene, acting as quantum dots creating a superlattice of resonators on the graphene ML, as revealed by a strong pattern of standing waves. A detailed analysis of the standing-wave pattern using Fourier Transform Scanning Tunneling Spectroscopy strongly indicates that this phenomenon can arise from a strong modification of the band structure of graphene and (or) from Charge Density Waves (CDW) where a large extension of Van Hove singularities is involved. Copyright (C) EPLA, 2010