Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene
| Autor: | M E Dávila, L Xian, S Cahangirov, A Rubio, G Le Lay |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | New Journal of Physics, Vol 16, Iss 9, p 095002 (2014) |
| Druh dokumentu: | article |
| ISSN: | 1367-2630 22458395 |
| DOI: | 10.1088/1367-2630/16/9/095002 |
| Popis: | We have grown an atom-thin, ordered, two-dimensional multi-phase film in situ through germanium molecular beam epitaxy using a gold (111) surface as a substrate. Its growth is similar to the formation of silicene layers on silver (111) templates. One of the phases, forming large domains, as observed in scanning tunneling microscopy, shows a clear, nearly flat, honeycomb structure. Thanks to thorough synchrotron radiation core-level spectroscopy measurements and advanced density functional theory calculations we can identify it as a √3 × √3 R (30°) germanene layer in conjunction with a √7 × √7 R (19.1°) Au(111) supercell, presenting compelling evidence of the synthesis of the germanium-based cousin of graphene on gold. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|