Publications in Scientific Journals:

F. Libisch, C Stampfer, J. Burgdörfer:
"Graphene quantum dots: beyond a Dirac billiard";
Physical Review B, 79 (2009), 115423 - 115429.

English abstract:
We present realistic simulations of quantum confinement effects in phase-coherent graphene quantum dots with linear dimensions of 10-40nm. We determine wave functions and energy-level statistics in the presence of disorder resulting from edge roughness, charge impurities, or short-ranged scatterers. Marked deviatons from a simple Dirac billiard for massless fermions are found. We find a remarkably stable dependence of the nearest-neighbor level spacing on edge roughness suggesting that the roughness of fabricated devices can be possibly characterized by the distribution of measured Coulomb blockade peaks.

graphene, quantum dots, Dirac billiards

"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)

Created from the Publication Database of the Vienna University of Technology.