Rare-earth atoms adsorption on epitaxial graphene: Analytical estimates
Davydov S. Yu. 1, Posrednik O. V. 2
1Ioffe Institute, St. Petersburg, Russia
2St. Petersburg State Electrotechnical University “LETI", St. Petersburg, Russia
Email: lesya76@mail.ru
Epitaxial single-layer graphene (SLG) is considered as a "tool" for extracting rare earth metal (REM) atoms from the environment. Estimates of the charge transition Za between adatoms and graphene and the values of the adsorption energy Eads for a single REM adatom and, taking into account dipole-dipole repulsion, at their final concentration up to monolayer are given. The influ-ence of the SiC substrate on Za and Eads is discussed. Keywords: nonzero adatoms concentration, dipole-dipole repulsion, SiC substrate.
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