Phys. Rev. Lett. 90, 176801 (2003) [4 pages]Quantum-Dot Ground-State Energies and Spin Polarizations: Soft versus Hard ChaosSee Also: Erratum Received 18 November 2002; published 28 April 2003 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. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.176801
DOI:
10.1103/PhysRevLett.90.176801
PACS:
73.21.–b, 05.45.Mt, 71.10.Ca
See AlsoErratum: Denis Ullmo, Tatsuro Nagano, and Steven Tomsovic, Erratum: Quantum-Dot Ground-State Energies and Spin Polarizations: Soft versus Hard Chaos [Phys. Rev. Lett. 90, 176801 (2003)], Phys. Rev. Lett. 91, 179901 (2003). |
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.