Magneto-conductance Oscillations in Graphene Antidot Arrays
arXiv:0807.1554 · doi:10.1063/1.2988725
Abstract
Epitaxial graphene films have been formed on the C-face of semi-insulating 4H-SiC substrates by a high temperature sublimation process. Nano-scale square antidot arrays have been fabricated on these graphene films. At low temperatures, magneto-conductance in these films exhibits pronounced Aharonov-Bohm oscillations with the period corresponding to magnetic flux quanta added to the area of a single antidot. At low fields, weak localization is observed and its visibility is enhanced by intravalley scattering on antidot edges. At high fields, we observe two distinctive minima in magnetoconductance which can be attributed to commensurability oscillations between classical cyclotron orbits and antidot array. All mesoscopic features, surviving up to 70 K, reveal the unique electronic properties of graphene.
5 pages, 3 figures
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Cited by in corpus (7)
- Robustness of edge states in graphene quantum dots
- Electronic properties of graphene antidot lattices
- Weak Localization and Transport Gap in Graphene Antidot Lattices
- Character of electronic states in graphene antidot lattices: Flat bands and spatial localization
- Inner and outer edge states in graphene rings: A numerical investigation
- Polaronic signatures and spectral properties of graphene antidot lattices
- Electronic properties of a graphene antidot in magnetic fields