Скачать полную версию статьи (в PDF формате)

Т. М. Радченко, В. А. Татаренко, І. Ю. Сагалянов, Ю. І. Прилуцький
«Конфіґураційні ефекти в електропровідності графенового шару з розподіленими адсорбованими атомами (K)»
201–214 (2015)

PACS numbers: 61.48.Gh, 68.43.Fg, 68.65.Pq, 72.80.Vp, 73.22.Pr, 73.50.Bk, 81.05.ue

As revealed, with the change of random spatial distribution of adatoms all over the graphene layer for correlated and ordered ones, the electroconductivity enhances in several (tens) times. Randomly arranged adatoms, which are attractive for uncombined charge carriers, manifest themselves as the long-range scattering centres, while they dominate as the short-range attractive scatterers in case of their short-range or long-range ordered distributions. As shown, an ordered arrangement of dopant (e.g., K) atoms directly above the graphene-lattice sites results to the band-gap opening in its energy spectrum of electrons. The band gap widens as the concentration of such adatoms increases.