Journal article
Quantum dot ground state energies and spin polarizations: soft versus hard chaos
Physical review letters, Vol.90(17), pp.176801-176801
2003
Handle:
https://hdl.handle.net/2376/105498
PMID: 12786089
Abstract
We consider how the nature of the dynamics affects ground state properties of ballistic quantum dots. We find that ``mesoscopic Stoner fluctuations'', that arise from the residual screened Coulomb interaction, are very sensitive to the degree of chaos. It leads to ground state energies and spin-polarizations whose fluctuations strongly increase as a system becomes less chaotic. The crucial features are illustrated with a model that depends on a parameter that tunes the dynamics from nearly integrable to mostly chaotic.
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Details
- Title
- Quantum dot ground state energies and spin polarizations: soft versus hard chaos
- Creators
- Denis Ullmo - Laboratoire de Physique Théorique et Modèles StatistiquesTatsuro Nagano - Department of PhysicsSteven Tomsovic - Department of Physics
- Publication Details
- Physical review letters, Vol.90(17), pp.176801-176801
- Academic Unit
- Physics and Astronomy, Department of
- Publisher
- American Physical Society
- Identifiers
- 99900546632101842
- Language
- English
- Resource Type
- Journal article