New Findings on Multilayer Silicene on Si(111)√3×√3R30°–Ag Template

We report new findings on multilayer silicene grown on Si(111)√3 × √3 R30°–Ag template, after the recent first compelling experimental evidence of its synthesis. Low-energy electron diffraction, reflection high-energy electron diffraction, and energy-dispersive grazing incidence X-ray diffraction me...

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Bibliographic Details
Main Authors: Paola De Padova, Amanda Generosi, Barbara Paci, Carlo Ottaviani, Claudio Quaresima, Bruno Olivieri, Marek Kopciuszyński, Lucyna Żurawek, Ryszard Zdyb, Mariusz Krawiec
Format: Article
Language:English
Published: MDPI AG 2019-07-01
Series:Materials
Subjects:
DFT
Online Access:https://www.mdpi.com/1996-1944/12/14/2258
Description
Summary:We report new findings on multilayer silicene grown on Si(111)√3 × √3 R30°–Ag template, after the recent first compelling experimental evidence of its synthesis. Low-energy electron diffraction, reflection high-energy electron diffraction, and energy-dispersive grazing incidence X-ray diffraction measurements were performed to show up the fingerprints of √3 × √3 multilayer silicene. Angle-resolved photoemission spectroscopy displayed new features in the second surface Brillouin zone, attributed to the multilayer silicene on Si(111)√3 × √3 R30°–Ag. Band-structure dispersion theoretical calculations performed on a model of three honeycomb stacked layers, silicene grown on Si(111)√3 × √3 R30°-Ag surface confirm the experimental results.
ISSN:1996-1944