Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene
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...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2014-01-01
|
| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/16/9/095002 |
| _version_ | 1827873836276645888 |
|---|---|
| author | M E Dávila L Xian S Cahangirov A Rubio G Le Lay |
| author_facet | M E Dávila L Xian S Cahangirov A Rubio G Le Lay |
| author_sort | M E Dávila |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-12T16:42:34Z |
| format | Article |
| id | doaj.art-7beaaf5a8f22458395f774ebaec84832 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:42:34Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-7beaaf5a8f22458395f774ebaec848322023-08-08T14:22:27ZengIOP PublishingNew Journal of Physics1367-26302014-01-0116909500210.1088/1367-2630/16/9/095002Germanene: a novel two-dimensional germanium allotrope akin to graphene and siliceneM E Dávila0L Xian1S Cahangirov2A Rubio3G Le Lay4Instituto de Ciencia de Materiales de Madrid-ICMM-CSIC, C/Sor Juana Inés de la Cruz, 3 Cantoblanco, 28049-Madrid, SpainNano–Bio Spectroscopy group, Universidad del País Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia, Spain; European Theoretical Spectroscopy Facility (ETSF), CFM CSIC-UPV/EHU-MPC and DIPC, Av Tolosa 72, E-20018 San Sebastián, SpainNano–Bio Spectroscopy group, Universidad del País Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia, Spain; European Theoretical Spectroscopy Facility (ETSF), CFM CSIC-UPV/EHU-MPC and DIPC, Av Tolosa 72, E-20018 San Sebastián, SpainNano–Bio Spectroscopy group, Universidad del País Vasco, Barrio Sarriena s/n, 48940 Leioa, Bizkaia, Spain; European Theoretical Spectroscopy Facility (ETSF), CFM CSIC-UPV/EHU-MPC and DIPC, Av Tolosa 72, E-20018 San Sebastián, Spain; Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany; Fritz-Haber-Institut Max-Planck-Gesellschaft , Berlin, GermanyAix-Marseille Université , CNRS, PIIM UMR 7345, 13397 Marseille Cedex, FranceWe 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.https://doi.org/10.1088/1367-2630/16/9/095002germaneneARPESSTMDFT |
| spellingShingle | M E Dávila L Xian S Cahangirov A Rubio G Le Lay Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene New Journal of Physics germanene ARPES STM DFT |
| title | Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene |
| title_full | Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene |
| title_fullStr | Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene |
| title_full_unstemmed | Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene |
| title_short | Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene |
| title_sort | germanene a novel two dimensional germanium allotrope akin to graphene and silicene |
| topic | germanene ARPES STM DFT |
| url | https://doi.org/10.1088/1367-2630/16/9/095002 |
| work_keys_str_mv | AT medavila germaneneanoveltwodimensionalgermaniumallotropeakintographeneandsilicene AT lxian germaneneanoveltwodimensionalgermaniumallotropeakintographeneandsilicene AT scahangirov germaneneanoveltwodimensionalgermaniumallotropeakintographeneandsilicene AT arubio germaneneanoveltwodimensionalgermaniumallotropeakintographeneandsilicene AT glelay germaneneanoveltwodimensionalgermaniumallotropeakintographeneandsilicene |