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

Abstract

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.

To be published in Physical Review B

References in corpus (4)

• Optical transitions in quantum ring complexes
• Few-electron eigenstates of concentric double quantum rings
• Electronic structure of few-electron concentric double quantum rings
• Multipole modes and spin features in the Raman spectrum of nanoscopic quantum rings

Cited by in corpus (4)

• Few-electron artificial molecules formed by laterally coupled quantum rings
• Spectral properties and magneto-optical excitations in semiconductor double-rings under Rashba spin-orbit interaction
• Characteristic molecular properties of one-electron double quantum rings under magnetic fields
• Exact wave functions for concentric two-electron systems