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arXiv · 1405.4204

Electron-Energy-Loss Spectra of Free-Standing Silicene

Luis M. Priede·Lilia Meza-Montes
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Abstract

Silicene is becoming one of the most important two-dimensional materials. In this work, EEL Spectra were calculated for alfa-silicene (flat), and beta-silicene (low-buckled, and theoretically the most stable). Band structures were determined using the semi-empirical Tight-Binding Method considering second nearest neighbors, sp3 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.

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Luis M. Priede, Lilia Meza-Montes. 2014-05-15. Electron-Energy-Loss Spectra of Free-Standing Silicene. https://doi.org/10.4028/www.scientific.net%2Fjnanor.28.1

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