Séminaire de groupe
|Quantum capacitance of warped and perforated graphene monolayers|
|IVIC, Caracas, Venezuela|
|jeudi 21 avril 2016 , 10h25|
|Salle de séminaire du groupe de Physique Statistique|
The total capacitance of graphene monolayers on a substrate depends on the electrostatic contribution in series with the quantum component, and thus it is dominated by the smallest of the two. In mesoscopic devices the quantum component is relatively small close to the Fermi energy (zero), hindering high capacitance applications. In order to increase the latter contribution we investigate two strategies: warping and perforating, in order maximize the presence of zig-zag boundaries that harbor localized states with energies close to zero.