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Adsorption of hydrogen, alkali metal, and halogen atoms on graphene: Adatom charge calculation

S. Yu. Davydov^a, G. I. Sabirova<sup>b

a</sup> Ioffe Institute, St. Petersburg
^b Saint Petersburg Electrotechnical University "LETI"

Abstract: The adsorption of an atom with a single valence s electron (hydrogen, alkali metals) or with a single valence $p$-vacancy (halogens) on the surface of a graphene monolayer is considered and the adatom charge is calculated. Cases where the adatom-graphene $\sigma$ bonds are formed with the participation of $p$, $sp$, $sp^2$, and $sp^3$ states of carbon atoms are analyzed. It is established that the character of hybridization rather weakly influences the charge transfer. The character of adatom charge variation in the series Li $\to$ Cs and F $\to$ I is analyzed.

Received: 10.02.2011

 English version: Technical Physics Letters, 2011, 37:6, 515–518

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