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Density-functional calculations of magnetoplasmons in quantum rings

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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 narrow and wide rings. The results are qualitatively compared with experimental data existing on microrings and on antidots. A smaller ring containing five electrons is also analyzed to allow for a closer comparison with a recent experiment on a two-electron quantum ring.

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EMPERADOR, Agustí, et al. Density-functional calculations of magnetoplasmons in quantum rings. Physical Review B. 1999. Vol. 59, num. 23, pags. 15301-15307. ISSN 0163-1829. [consulted: 26 of May of 2026]. Available at: https://hdl.handle.net/2445/10481

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