Surface superstructures in highly oriented pyrolitic graphite surfaces after Ar+ bombardment

MORENO LÓPEZ, J.C.; PASSEGGI (JR.), M.C.G.; FERRÓN, J.

SURFACE SCIENCE

Elsevier Science

Lugar: Amsterdam, Holanda; Año: 2008 vol. 602 p. 671 - 676

0039-6028

By combining a low dose of Ar+ ion bombardment on a highly oriented pyrolytic graphite surface and scanning tunnelling microscopy, we have been able to study different superstructures formed by the collision cascades of individual ion impacts. These superstructures may coexist; even interfere to give place to a new superstructure. Thus, we report the coexistence of a Moiré pattern with a (1.73×1.73)R30º superstructure. Furthermore, the superposition of two (1.73×1.73)R30º superstructures forming a honeycomb one, leads us to suggest that the latter may be not a superstructure itself.