Physical Review Letters· 2012Q1
Silicene: Compelling Experimental Evidence for Graphenelike Two-Dimensional Silicon
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- 2012year
Short summary
Researchers provide compelling experimental evidence for the synthesis of epitaxial silicene sheets on a silver (111) substrate, demonstrating its graphenelike structure and electronic properties.
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Key points
- Experimental synthesis of epitaxial silicene sheets on a silver (111) substrate is confirmed.
- Structural evidence from scanning tunneling microscopy supports a buckled honeycomb arrangement.
- Electronic properties, measured by angular-resolved photoemission spectroscopy, resemble those of graphene.
- Density functional theory calculations corroborate the experimental findings.
AI-generated from the title and abstract; the full text is not read.
Abstract
Because of its unique physical properties, graphene, a 2D honeycomb arrangement of carbon atoms, has attracted tremendous attention. Silicene, the graphene equivalent for silicon, could follow this trend, opening new perspectives for applications, especially due to its compatibility with Si-based electronics. Silicene has been theoretically predicted as a buckled honeycomb arrangement of Si atoms and having an electronic dispersion resembling that of relativistic Dirac fermions. Here we provide compelling evidence, from both structural and electronic properties, for the synthesis of epitaxial silicene sheets on a silver (111) substrate, through the combination of scanning tunneling microscopy and angular-resolved photoemission spectroscopy in conjunction with calculations based on density functional theory.
The authors' abstract, as published at the source. Physical Review Letters, 2012 · DOI ↗
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Field: Materials Chemistry
Materials ChemistryMaterials Science