Interactions and Disorder in Quantum Dots: Instabilities and Phase Transitions

Details Interactions and Disorder in Quantum Dots: Instabilities and Phase Transitions Interactions and Disorder in Quantum Dots: Instabilities and Phase Transitions

2002-03-12

arxiv.org/abs/cond-mat/0203238v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure; version to appear in Phys Rev Letters

Scientific paper

10.1103/PhysRevLett.89.126804

Using a fermionic renormalization group approach we analyse a model where the electrons diffusing on a quantum dot interact via Fermi-liquid interactions. Describing the single-particle states by Random Matrix Theory, we find that interactions can induce phase transitions (or crossovers for finite systems) to regimes where fluctuations and collective effects dominate at low energies. Implications for experiments and numerical work on quantum dots are discussed.

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