DPG Phi
Verhandlungen
Verhandlungen
DPG

Regensburg 2010 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

HL: Fachverband Halbleiterphysik

HL 7: Graphene 1 (Joint Session with TT)

HL 7.5: Vortrag

Montag, 22. März 2010, 11:15–11:30, H18

Is it possible to detect edge states in graphene quantum dots? — •Michael Wimmer1, Anton R. Akhmerov1, and Francisco Guinea21Instituut-Lorentz, Universiteit Leiden, The Netherlands — 2Instituto de Ciencia de Materiales de Madrid, Spain

We analyze the single particle states at the edges of graphene quantum dots of arbitrary shapes. By combining analytical and numerical arguments, we show that localized edge states, distinct from extended ones, exist in dots of all dimensions. The number of these states is proportional to the circumference of the dot measured in lattice constants. Perturbations breaking electron-hole symmetry shift the edge states away from zero energy but do not change their total amount.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2010 > Regensburg