The growth of AA graphite on (111) diamond

Abstract

Stacked AA graphite has been synthesized using a high-density dc plasma in hydrogen-methane mixtures. Graphene layers have been grown epitaxially with 2-1 registration between the AA graphitic edges and the (111) surface of diamond. In addition, a new graphite crystal structure containing AA(') graphene layers, where alternate planes are translated by half the hexagon width, is formed by 1-1 registry. The resulting interplanar distances of the AA graphite at the interface range from 2.20 A for the 1-1 registration to 4.40 A for the 2-1 registration and have been measured directly by high-resolution transmission electron microscopy (TEM). The appearance of the characteristic d-spacings, 3.55, 2.15, 1.80, 1.75 (not fully resolved), and 1.25 A in the selective area diffraction patterns from the TEM, are consistent with reflections from the (001), (100), (102), (002), and (110) planes of the AA graphite. Simulation of the diffraction patterns, employing the structural factors of graphene, confirms the existence of AA graphite.

van der Waals interaction in magnetic bilayer graphene nanoribbons

“…3 However, the AA stacking has been observed in experiments on few-layer graphene, and it should also be considered in bilayer stackings. [4][5][6][7] For example, the AA and AB stackings have been observed indistinctly at the graphene edges in samples grown on SiC. 4 In fact, bilayer graphene with AA stacking has also been synthesized and observed by transmission electron microscopy (TEM).…”

“…4 In fact, bilayer graphene with AA stacking has also been synthesized and observed by transmission electron microscopy (TEM). 5,6 Due to the differences in the electronic properties of bilayer AA and AB, the change between stackings by a relative displacement of the layers has even been proposed as the key mechanism for a switch device. [7][8][9] Graphene nanoribbons are graphene strips of nanometric width and arbitrary length, with electronic properties depending on their edges and widths.…”

Interdistance Effects on Flat and Buckled Silicene Like-bilayers

“…The latter appears in three dimensional geometries describing the graphite natural configurations, which have received quite important deeper studies [24]. However, the (AA) stacking arrangement has been also synthesized and observed in few layer configurations including the bilayer hexagonal systems [25][26][27][28].…”

Energy levels of an ideal quantum ring in AA-stacked bilayer graphene

“…There are two dominant ways in which the two layers can be stacked. The first one is the so called AB-stacked bilayer graphene [4,5] and the second is the AA-stacked bilayer graphene [6,7]. In the AB-stacking, the layers are arranged in such a way that the A 1 sublattice is exactly on top of the sublattice B 2 .…”