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  Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene

Dávila, M. E., Xian, L., Cahangirov, S., Rubio, A., & Le Lay, G. (2014). Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene. New Journal of Physics, 16(9): 095002. doi:10.1088/1367-2630/16/9/095002.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-B305-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-F529-B
Genre: Journal Article

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http://arxiv.org/abs/1406.2488 (Preprint)
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 Creators:
Dávila, M. E.1, Author
Xian, L.2, 3, Author
Cahangirov, S.2, 3, Author
Rubio, Angel2, 3, 4, 5, Author              
Le Lay, G.6, Author
Affiliations:
1Instituto de Ciencia de Materiales de Madrid-ICMM-CSIC, C/Sor Juana Inés de la Cruz, 3 Cantoblanco, 28049-Madrid, Spain, ou_persistent22              
2Nano-Bio Spectroscopy Group and ETSF Scientific Development Centre, Departamento de F, ou_persistent22              
3European Theoretical Spectroscopy Facility (ETSF), CFM CSIC-UPV/EHU-MPC and DIPC, Av Tolosa 72, E-20018 San Sebastián, Spain, ou_persistent22              
4Theory, Fritz Haber Institute, Max Planck Society, ou_634547              
5Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
6Aix-Marseille Université, CNRS, PIIM UMR 7345, 13397 Marseille Cedex, France, ou_persistent22              

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Free keywords: PACS numbers: 68.35.B- Structure of clean surfaces (and surface reconstruction); 68.55.A- Nucleation and growth; 81.15.Hi Molecular, atomic, ion, and chemical beam epitaxy; 68.37.Ef Scanning tunneling microscopy (including chemistry induced with STM)
 Abstract: 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.

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Language(s): eng - English
 Dates: 2014-07-242014-05-312014-07-312014-09-09
 Publication Status: Published online
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1088/1367-2630/16/9/095002
arXiv: 1406.2488
 Degree: -

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Title: New Journal of Physics
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 16 (9) Sequence Number: 095002 Start / End Page: - Identifier: ISSN: 1367-2630
CoNE: /journals/resource/954926913666