Level Fluctuations and Many-Body Effects in Disorder-Free Quantum Dots
Mesoscale and Nanoscale Physics
2009-10-31 v1 Strongly Correlated Electrons
Abstract
We have investigated whether many-body effects can induce significant level fluctuations in a disorder-free quantum dot. The closed energy shell structures and relaxation of the Hartree-Fock potentials are found to play a significant role. The level degeneracy consistent with the rotational symmetry of the confining potential determines the structure of the energy shells. A closed shell state of a dot can give rise to large fluctuations. When a strong magnetic field is present the shell structure is absent and fluctuations are significantly reduced.
Cite
@article{arxiv.cond-mat/9908057,
title = {Level Fluctuations and Many-Body Effects in Disorder-Free Quantum Dots},
author = {Min-Chul Cha and S. -R. Eric Yang},
journal= {arXiv preprint arXiv:cond-mat/9908057},
year = {2009}
}
Comments
4 pages, 3 figures