Getting through the nature of silicene: sp2-sp3 two-dimensional silicon nanosheet

E. Cinquanta; E. Scalise; D. Chiappe; C. Grazianetti; B. van den Broek; M. Houssa; M. Fanciulli; A. Molle

doi:10.1021/jp405642g

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arXiv · 1212.5422

Getting through the nature of silicene: sp2-sp3 two-dimensional silicon nanosheet

E. Cinquanta·E. Scalise·D. Chiappe·C. Grazianetti·B. van den Broek·M. Houssa·M. Fanciulli·A. Molle

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Abstract

By combining experimental techniques with ab-initio density functional theory calculations, we describe the Si/Ag(111) two-dimensional system in terms of a sp2-sp3 crystalline form of silicon characterized by a vertically distorted honeycomb lattice. We show that 2D sp2-sp3 Si NSs are qualified by a prevailing Raman peak which can be assigned to a graphene-like E2g vibrational mode and that highly distorted superstructures are semiconductive whereas low distorted ones behave as semimetals.

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E. Cinquanta, E. Scalise, D. Chiappe, C. Grazianetti, B. van den Broek, M. Houssa, M. Fanciulli, A. Molle. 2013-05-02. Getting through the nature of silicene: sp2-sp3 two-dimensional silicon nanosheet. https://doi.org/10.1021/jp405642g

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