Rare-earth atoms adsorption on epitaxial graphene: analytical estimates

S. Yu. Davydov^a, O. V. Posrednik<sup>b

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

Abstract: 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 $Z_a$ 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 influence of the SiC substrate on $Z_a$ and $E_{ads}$ is discussed.

Keywords: nonzero adatoms concentration, dipole-dipole repulsion, SiC substrate.

Received: 21.07.2025
Revised: 28.08.2025
Accepted: 01.09.2025

DOI: 10.61011/PJTF.2026.01.61921.20447

Bibliographic databases:

•