Synthesis of Multilayer Silicene on Si(111)√3 x √3-Ag

被引：33

作者：

De Padova, Paola ^{[1
]}

Feng, Haifeng ^{[2
]}

Zhuang, Jincheng ^{[2
]}

Li, Zhi ^{[2
]}

Generosi, Amanda ^{[1
]}

Paci, Barbara ^{[1
]}

Ottaviani, Carlo ^{[1
]}

Quaresima, Claudio ^{[1
]}

Olivieri, Bruno ^{[3
]}

Krawiec, Mariusz ^{[4
]}

Du, Yi ^{[2
]}

机构：

[1] CNR, ISM, Via Fosso Cavaliere 100, I-00133 Rome, Italy

[2] Univ Wollongong, ISEM, AIIM, Wollongong, NSW 2522, Australia

[3] CNR, ISAC, Via Fosso Cavaliere 100, I-00133 Rome, Italy

[4] Marie Curie Sklodowska Univ, Inst Phys, Pl M Curie Sklodowskiej 1, PL-20031 Lublin, Poland

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2017年 / 121卷 / 48期

基金：

澳大利亚研究理事会;

关键词：

ENERGY-ELECTRON DIFFRACTION; RAY-DIFFRACTION; SURFACE-STATE; AG(111); SUPERSTRUCTURE; GROWTH;

D O I：

10.1021/acs.jpcc.7b09286

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The compelling experimental evidence of multilayer silicene synthesis on one monolayer of silver deposited on a silicon substrate, Si(111)root 3 X root 3-Ag, used as a template is reported. Auger electron spectroscopy, low-energy electron diffraction, scanning tunneling microscopy/spectroscopy, in situ Raman spectroscopy, and energy-dispersive in-plane X-ray diffraction were applied to achieve the fingerprints of root 3 X root 3 multilayer silicene. Density functional theory calculations provided the structural models of single, bilayer, and three-layer silicene on the Si(111) root 3 X root 3-Ag surface. Single-layer silicene retains its free-standing form. The structural models, which are consistent with the experimental findings, feature atomic structure substantially different from that of Si(111).

引用

页码：27182 / 27190

页数：9

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