Superlattice of resonators on monolayer graphene created by intercalated gold nanoclusters

被引：22

作者：

Cranney, M. ^{[1
]}

Vonau, F. ^{[1
]}

Pillai, P. B. ^{[2
]}

Denys, E. ^{[1
]}

Aubel, D. ^{[1
]}

De Souza, M. M. ^{[2
]}

Bena, C. ^{[3
,4
]}

Simon, L. ^{[1
]}

机构：

[1] Inst Sci Mat Mulhouse IS2M LRC 7228 CNRS UHA, F-68093 Mulhouse, France

[2] Elect & Elect Engn Univ Sheffield, Semicond Mat & Device Grp, Sheffield S1 3JD, S Yorkshire, England

[3] Univ Paris 11, Phys Solides Lab, F-91405 Orsay, France

[4] CEA Saclay Orme Merisiers, Inst Phys Theor, F-91190 Gif Sur Yvette, France

来源：

EPL | 2010年 / 91卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

ELECTRONIC-STRUCTURE; EPITAXIAL GRAPHENE; SURFACE; INTERFERENCE; 6H-SIC(0001); GRAPHITE; STATES; GAS;

D O I：

10.1209/0295-5075/91/66004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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

引用

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