2014/05/15 by Luis M. Priede, Lilia Meza-Montes · 3 citations
Chemistry · Materials Science · Physics and Astronomy · #Dielectric #Dielectric function #Discretization #Fullerene Chemistry and Applications #Graphene research and applications #Phase (matter) #Random phase approximation #Silicene #Spectral line #Synthesis and Properties of Aromatic Compounds #cond-mat.mtrl-sci
paper · pdf · doi:10.4028/www.scientific.net/jnanor.28.1
published in Journal of nano research 28, 1-7 · 6 pages
arxiv created 2014/05/15 · openalex publication_date 2014/06/06 · arxiv updated 2014/12/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Silicene is becoming one of the most important two-dimensional materials. In this work, EEL Spectra were calculated for α-silicene (flat), and β-silicene (low-buckled, and theoretically the most stable). Band structures were determined using the semi-empirical Tight-Binding Method considering second nearest neighbors, sp 3 model, Harrison's rule, and Slater-Koster parameterization. The dielectric function was calculated within the Random Phase Approximation and a space discretization scheme. We found that, compared to bulk Si, additional resonances appear which are red-shifted. Buckling gives rise to a richer structure at low energy.