Far-Infrared Excitations below the Kohn Mode: Internal Motion in a Quantum Dot

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

We have investigated the far-infrared response of quantum dots in modulation doped GaAs heterostructures. We observe novel modes at frequencies below the center-of-mass Kohn mode. Comparison with Hartree-RPA calculations show that these modes arise from the flattened potential in our field-effect confined quantum dots. They reflect pronounced relative motion of the charge density with respect to the center-of-mass.
8 pages, LaTeX with integrated 6 PostScript figures

Keywords

Mesoscale and Nanoscale Physics

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/17314

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0102005
 http://arxiv.org/abs/cond-mat/0102005
 Phys. Rev. B 63, 195303 (2001)
 doi:10.1103/PhysRevB.63.195303

Collections

arXiv