Spin and Conductance-Peak-Spacing Distributions in Large Quantum Dots: A Density Functional Theory Study
arXiv:cond-mat/0208146 · doi:10.1103/PhysRevLett.90.026806
Abstract
We use spin-density-functional theory to study the spacing between conductance peaks and the ground-state spin of 2D model quantum dots with up to 200 electrons. Distributions for different ranges of electron number are obtained in both symmetric and asymmetric potentials. The even/odd effect is pronounced for small symmetric dots but vanishes for large asymmetric ones, suggesting substantially stronger interaction effects than expected. The fraction of high-spin ground states is remarkably large.
4 pages, 3 figures
Cited by in corpus (6)
- Singlet-Triplet Transition Tuned by Asymmetric Gate Voltages in a Quantum Ring
- Electron correlations in metal nanoparticles with spin-orbit scattering
- Electron-Electron Interactions in Isolated and Realistic Quantum Dots: A Density Functional Theory Study
- Landau Fermi Liquid Picture of Spin Density Functional Theory: Strutinsky Approach to Quantum Dots
- Interaction Effects in the Mesoscopic Regime: A Quantum Monte Carlo Study of Irregular Quantum Dots
- Interactions and Broken Time-Reversal Symmetry in Chaotic Quantum Dots