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Density-functional calculations of magnetoplasmons in quantum rings
Emperador, Agustí; Barranco Gómez, Manuel; Lipparini, Enrico; Pi Pericay, Martí; Serra, Llorenç
Universitat de Barcelona
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.
2010-05-04
Semiconductors
Teoria del funcional de densitat
Electrònica quàntica
Semiconductors
Density functional theory
Quantum electronics
(c) The American Physical Society, xxx
Article
The American Physical Society
         

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