Chaos and Interacting Electrons in Ballistic Quantum Dots

Details Chaos and Interacting Electrons in Ballistic Quantum Dots Chaos and Interacting Electrons in Ballistic Quantum Dots

1997-08-13

arxiv.org/abs/cond-mat/9708092v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, revtex, includes 3 postscript figs

Scientific paper

10.1103/PhysRevLett.80.895

We show that the classical dynamics of independent particles can determine the quantum properties of interacting electrons in the ballistic regime. This connection is established using diagrammatic perturbation theory and semiclassical finite-temperature Green functions. Specifically, the orbital magnetism is greatly enhanced over the Landau susceptibility by the combined effects of interactions and finite size. The presence of families of periodic orbits in regular systems makes their susceptibility parametrically larger than that of chaotic systems, a difference which emerges from correlation terms.

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