Density-functional calculations of magnetoplasmons in quantum rings
Open Access
- 15 June 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 59 (23) , 15301-15307
- https://doi.org/10.1103/physrevb.59.15301
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 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.Keywords
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