Optical response of two-dimensional few-electron concentric double quantum rings: A local-spin-density-functional theory study

Details Optical response of two-dimensional few-electron concentric double quantum rings: A local-spin-density-functional theory study Optical response of two-dimensional few-electron concentric double quantum rings: A local-spin-density-functional theory study

2006-10-30

arxiv.org/abs/cond-mat/0610841v1

Phys. REv. B74 193309 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

To be published in Physical Review B

Scientific paper

10.1103/PhysRevB.74.193309

We have investigated the dipole charge- and spin-density response of few-electron two-dimensional concentric nanorings as a function of the intensity of a perpendicularly applied magnetic field. We show that the dipole response displays signatures associated with the localization of electron states in the inner and outer ring favored by the perpendicularly applied magnetic field. Electron localization produces a more fragmented spectrum due to the appearance of additional edge excitations in the inner and outer ring.

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