Modulating the Electronic Properties of Graphene by Self-Organized Sulfur Identical Nanoclusters and Atomic Superlattices Confined at an Interface

Donglin Ma, Zhongqiu Fu, Xuelei Sui, Keke Bai, Jiabin Qiao, Chao Yan, Yu Zhang, Jingyi Hu, Qian Xiao, Xinrui Mao, Wenhui Duan, Lin He*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

16 引用 (Scopus)

摘要

Ordered atomic-scale superlattices on a surface hold great interest both for basic science and for potential applications in advanced technology. However, controlled fabrication of superlattices down to the atomic scale has proven exceptionally challenging. Here we develop a segregation method to realize self-organization of S superlattices at the interface of graphene and S-rich Cu substrates. Via scanning tunneling microscope measurements, we directly image well-ordered identical nanocluster superlattices and atomic superlattices under the cover of graphene. Scanning tunneling spectra show that the superlattices in turn could modulate the electronic structure of top-layer graphene. Importantly, a special-ordered S monatomic superlattice commensurate with a graphene lattice is found to drive semimetal graphene into a symmetry-broken phase - the electronic Kekulé distortion phase - which opens a bandgap of ∼245 meV.

源语言英语
页(从-至)10984-10991
页数8
期刊ACS Nano
12
11
DOI
出版状态已出版 - 27 11月 2018
已对外发布

指纹

探究 'Modulating the Electronic Properties of Graphene by Self-Organized Sulfur Identical Nanoclusters and Atomic Superlattices Confined at an Interface' 的科研主题。它们共同构成独一无二的指纹。

引用此