Far-infrared spectroscopy of nanoscopic InAs rings

Abstract

We have employed time-dependent local-spin density theory to analyze the far-infrared transmission spectrum of InAs self-assembled nano-rings recently reported [A. Lorke et al, cond-mat/9908263 (1999)]. The overall agreement between theory and experiment is good, which on the one hand confirms that the experimental peaks indeed reflect the ring-like structure of the sample, and on the other hand, asseses the suitability of the theoretical method to describe such small nanostructures. The addition energies of one- and two-electron rings are also reported and compared with the corresponding capacitance spectra.

Typeset using Revtex, 7 pages and 8 Postscript figures

References in corpus (4)

• Spectroscopy of nanoscopic semiconductor rings
• Spin and density longitudinal response of quantum dots in time-dependent local-spin-density approximation
• Magnetoplasmons in quantum rings
• Current Density Functional approach to large quantum dots in intense magnetic fields

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• Aharonov-Bohm effect of excitons in nano-rings
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• Ground state and far-infrared absorption of two-electron rings in a magnetic field
• Aharonov-Bohm effect for an exciton in a finite width nano-ring
• Magnetic field control of the intraband optical absorption in two-dimensional quantum rings
• Electron-acoustic-phonon scattering and electron relaxation in two-coupled quantum rings
• Low energy exciton states in a nanoscopic semiconducting ring
• Size effects on excitons in nano-rings
• Many-body luminescence from highly excited quantum-confined structures