Spontaneous Coherence and Collective Modes in Double-Layer Quantum Dot Systems
Abstract
We study the ground state and the collective excitations of parabolically-confined double-layer quantum dot systems in a strong magnetic field. We identify parameter regimes where electrons form maximum density droplet states, quantum-dot analogs of the incompressible states of the bulk integer quantum Hall effect. In these regimes the Hartree-Fock approximation and the time-dependent Hartree-Fock approximations can be used to describe the ground state and collective excitations respectively. We comment on the relationship between edge excitations of dots and edge magneto-plasmon excitations of bulk double-layer systems.
Cite
@article{arxiv.cond-mat/9604127,
title = {Spontaneous Coherence and Collective Modes in Double-Layer Quantum Dot Systems},
author = {Jun Hu and E. Dagotto and A. H. MacDonald},
journal= {arXiv preprint arXiv:cond-mat/9604127},
year = {2009}
}
Comments
20 pages (figures included) and also available at http://fangio.magnet.fsu.edu/~jhu/Paper/qdot_cond.ps, replaced to fix figures