We have studied the capacitance between two parallel plates enclosing a quantum confined system and its dependence on the applied voltage. The concepts of capacitance and differential capacitance are discussed together with their applicability to systems characterized by single-electron tunneling. We determine the tunneling thresholds by means of a formalism based on the minimization of the system free energy and we retrieve, as a special case, Luryi's quantum capacitance formula. We apply our method to the study of an idealized system made up of a number of quantum dots with random size distributed according to a gaussian, Results are shown for different choices of the position of the dots between the plates and of the voltage span applied to perform the measurement of the differential capacitance.
|Autori:||Macucci M; Hess K|
|Titolo:||Corrections to the capacitance between two electrodes due to the presence of quantum confined system|
|Anno del prodotto:||1998|
|Digital Object Identifier (DOI):||10.1155/1998/92921|
|Appare nelle tipologie:||1.1 Articolo in rivista|