Structure of Silicene Grown on Ag(111)
Structure of Silicene Grown on Ag(111)
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DOI：
10.1143/apex.5.045802
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发表时间：
2012-04-01
影响因子：
2.3
通讯作者：
Kawai, Maki
中科院分区：
文献类型：
--
作者：
Lin, Chun-Liang;Arafune, Ryuichi;Kawai, Maki
利用扫描隧道显微镜（STM）和低能电子衍射（LEED）结合密度泛函理论（DFT）计算研究了Si在Ag（111）衬底上生长的二维蜂窝状硅烯的结构.通过STM发现了两种蜂窝结构的原子排列，并通过LEED和DFT计算证实;一种是4 x 4，另一种是root 13 x root 13 R13.9度在4 x 4结构中，蜂窝晶格保持了6个原子的垂直位移，而root 13 x root 13 R13.9度则采用规则屈曲的蜂窝几何结构。(C)2012日本应用物理学会
The structure of silicene, the two-dimensional honeycomb sheet of Si, grown on Ag(111) was investigated by scanning tunneling microscopy (STM) and low-energy electron diffraction (LEED) combined with density functional theory (DFT) calculation. Two atomic arrangements of honeycomb configuration were found by STM, which are confirmed by LEED and DFT calculations; one is 4 x 4 and the other is root 13 x root 13 R13.9 degrees In the 4 x 4 structure, the honeycomb lattice remains with six atoms displaced vertically, whereas the root 13 x root 13 R13.9 degrees takes the regularly buckled honeycomb geometry. (C) 2012 The Japan Society of Applied Physics