Graphene based quantum dots

Details Graphene based quantum dots Graphene based quantum dots

2009-11-20

arxiv.org/abs/0911.4024v1

J. Phys.: Condens. Matter 22 (2010) 302001

Physics

Condensed Matter

Materials Science

17pages, 4figures, 1table

Scientific paper

10.1088/0953-8984/22/30/302001

Laterally localized electronic states are identified on a single layer of graphene on ruthenium. The individual states are separated by 3 nm and comprise regions of about 90 carbon atoms. This constitutes a quantum dot array, evidenced by quantum well resonances that are modulated by the corrugation of the graphene layer. The quantum well resonances are strongest on the isolated "hill" regions where the graphene is decoupled from the surface. This peculiar nanostructure is expected to become important for single electron physics where it bridges zero-dimensional molecule-like and two-dimensional graphene on a highly regular lattice.

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