Theoretical Description of Shell Filling in Cylindrical Quantum Dots

• Authors: B. Szafran , S. Bednarek , J. Adamowski
• Languages of publication: EN

Abstracts

EN

A theoretical quantitative description is given for non-periodic oscillations observed in a current vs. gate voltage characteristics of cylindrical quantum dots. Energy eigenvalues and chemical potentials for a system of N confined electrons (N=1,...,13) are calculated by the unrestricted Hartree-Fock method with a confinement potential proportional to the gate voltage. The positions of the observed peaks of the current are reproduced with a very good accuracy. The non-periodicity of the characteristic is explained as a result of the shell filling, which is a signature of the quantum Coulomb blockade.

Keywords

EN

73.20.Dx

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1998
• Volume: 94
• Issue: 3
• Pages: 555-559

Dates

published

1998-09

Contributors

author

B. Szafran

• Faculty of Physics and Nuclear Techniques, Technical University (AGH), Al. Mickiewicza 30, 30-059 Kraków, Poland

author

S. Bednarek

• Faculty of Physics and Nuclear Techniques, Technical University (AGH), Al. Mickiewicza 30, 30-059 Kraków, Poland

author

J. Adamowski

• Faculty of Physics and Nuclear Techniques, Technical University (AGH), Al. Mickiewicza 30, 30-059 Kraków, Poland

Identifiers

DOI

10.12693/APhysPolA.94.555