Collective oscillations in quantum rings: a broken symmetry case

Details Collective oscillations in quantum rings: a broken symmetry case Collective oscillations in quantum rings: a broken symmetry case

2000-06-12

arxiv.org/abs/cond-mat/0006194v1

Eur. Phys. J. D 12, 493 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

ReVTeX, 5 embedded eps, two gifs. Accepted in EPJD

Scientific paper

10.1007/s100530070010

We present calculations within density functional theory of the ground state and collective electronic oscillations in small two-dimensional quantum rings. No spatial symmetries are imposed to the solutions and, as in a recent contribution, a transition to a broken symmetry solution in the intrinsic reference frame for an increasingly narrow ring is found. The oscillations are addressed by using real-time simulation. Conspicuous effects of the broken symmetry solution on the spectra are pointed out.

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