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Magnetoplasmons in quantum rings

A. Emperador·M. Barranco·E. Lipparini·M. Pi·Ll. Serra
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Abstract

We have studied the structure and dipole charge density response of nanorings as a function of the magnetic field using local-spin density functional theory. Two small rings consisting of 12 and 22 electrons confined by a positively charged background are used to represent the cases of a narrow and a wide ring. The results are qualitatively compared with experimental data existing on microrings and on antidots. A smaller ring containing 5 electrons is also analyzed to allow for a closer comparison with a recent experiment on a two electron quantum ring.

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A. Emperador, M. Barranco, E. Lipparini, M. Pi, Ll. Serra. 1999-02-26. Magnetoplasmons in quantum rings. https://doi.org/10.1103/physrevb.59.15301

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