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\begin{document}
\title{Intercalation of graphene on Ru(0001): possible mechanisms}
\author{\underline{M. Lewandowski}}
\affiliation{NanoBioMedical Centre, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland}
\author{E. Madej}
\affiliation{Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland}
\author{Z. Miłosz}
\affiliation{NanoBioMedical Centre, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland}
\author{D. Wilgocka-Ślęzak}
\affiliation{Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland}
\author{M.~Hermanowicz}
\affiliation{Institute of Physics, Poznań University of Technology, Piotrowo 3, 60-965 Poznań, Poland}
\author{N. Spiridis}
\affiliation{Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland}
\author{J. Korecki}
\affiliation{Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland}
\author{S. Jurga}
\affiliation{NanoBioMedical Centre, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland}
\author{F. Stobiecki}
\affiliation{NanoBioMedical Centre, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland}
\begin{abstract}
We used scanning tunneling microscopy (STM), low energy electron microscopy (LEEM) and low energy electron diffraction (LEED) to study the mechanisms of intercalation of epitaxial graphene (EG) grown on Ru(0001) by thermal decomposition of ethylene (C$_2$H$_4$) [1]. The results revealed direct influence of graphene’s preparation method on its structure and the intercalation mechanisms. The experimental results were supported by theoretical ab initio calculations.



\textbf{References:}
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{\scriptsize[1] S. Marchni, S. Günther, and J. Wintterlin, Phys. Rev. B 76 (2007) 075429.}
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\textit{The work was financially supported by the National Science Centre of Poland (OPUS project No. 2014/15/B/ST3/02927).}
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