Continuous Germanene Layer on A(111)
Continuous Germanene Layer on A(111)
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DOI：
10.1021/acs.nanolett.5b00085
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发表时间：
2015-04-01
期刊：
影响因子：
10.8
通讯作者：
Pirri, Carmelo
中科院分区：
文献类型：
--
作者：
Derivaz, Mickael;Dentel, Didier;Pirri, Carmelo
在Al（111）表面制备了类似硅烯的二维蜂窝结构锗烯。二维锗烯层均匀地覆盖在Al（111）表面原子平面上，具有大的相干性。它的特点是相对于衬底晶格的（3 × 3）超结构，通过低能电子衍射和扫描隧道显微镜显示。第一性原理计算表明，Ge原子容纳在一个非常规则的原子配置与屈曲构象。
Germanene, a 2D honeycomb structure similar to silicene, has been fabricated on Al(111). The 2D germanene layer covers uniformly the substrate with a large coherence over the Al(111) surface atomic plane. It is characterized by a (3 x 3) superstructure with respect to the substrate lattice, shown by low energy electron diffraction and scanning tunnelling microscopy. First-principles calculations indicate that the Ge atoms accommodate in a very regular atomic configuration with a buckled conformation.