Emperador, AgustíBarranco Gómez, ManuelLipparini, EnricoPi Pericay, MartíSerra, Llorenç2009-12-242009-12-2419990163-1829https://hdl.handle.net/2445/10481We 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.7 p.application/pdfeng(c) The American Physical Society, 1999SemiconductorsTeoria del funcional de densitatElectrònica quànticaSemiconductorsDensity functional theoryQuantum electronicsinfo:eu-repo/semantics/article149500info:eu-repo/semantics/openAccess