Realization of free-standing silicene using bilayer graphene

M. Neek-Amal, A. Sadeghi, G. R. Berdiyorov, F. M. Peeters

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68 Citations (Scopus)

Abstract

The available synthesized silicene-like structures have been only realized on metallic substrates which are very different from the standalone buckled silicene, e.g., the Dirac cone of silicene is destroyed due to lattice distortion and the interaction with the substrate. Using graphene bilayer as a scaffold, a route is proposed to synthesize silicene with electronic properties decoupled from the substrate. The buckled hexagonal arrangement of silicene between the graphene layers is found to be very similar to the theoretically predicted standalone buckled silicene which is only very weakly van der Waals coupled to the graphene layers with a graphite-like interlayer distance of 3.42 Å and without any lattice distortion. We found that these stacked layers are stable well above room temperature.

Original languageEnglish
Article number261904
JournalApplied Physics Letters
Volume103
Issue number26
DOIs
Publication statusPublished - 23 Dec 2013

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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