Abstract
We investigate the addition spectrum of disordered quantum dots containing spinless interacting fermions using the self-consistent Hartree-Fock approximation. We concentrate on the regime with finite dimensionless conductance We find that in this approximation the peak spacing fluctuations do not scale with the mean single-particle level spacing for either Coulomb or nearest-neighbor interactions when We also show that Koopmans’ approximation to the addition spectrum can lead to errors that are of order the mean level spacing or larger, both in the mean addition spectrum peak spacings, and in the peak spacing fluctuations.
- Received 18 February 1999
DOI:https://doi.org/10.1103/PhysRevB.60.2541
©1999 American Physical Society