Magnetoluminescence studies oAs self-assembled quantum dots iAs matrices

authored by

P. Wang, J. Merz, S. Fafard, R. Leon, D. Leonard, G. Medeiros-Ribeiro, Michael Oestreich, P. Petroff, K. Uchida, N. Miura, H. Akiyama, H. Sakaki

Abstract

We have studied the photoluminescence spectra of (Formula presented)(Formula presented)As self-assembled quantum dots in (Formula presented)(Formula presented)As matrices with magnetic fields up to B=40 T. The quantum dot structure is pseudomorphically grown by molecular-beam epitaxy on (100) GaAs substrates. From the analysis of the diamagnetic shift of the magnetoluminescence spectra, we estimate the total lateral electron and hole confinement energy to be 43 meV. The exciton radius is deduced as 5 nm. The exciton binding energy in such a quantum dot system is estimated to be ∼31 meV based on trial wave-function calculations of the actual dot system.

External Organisation(s)

University of Notre Dame
University of California at Santa Barbara
University of Tokyo

Type

Article

Journal

Physical Review B - Condensed Matter and Materials Physics

Volume

53

Pages

16458-16461

No. of pages

4

ISSN

1098-0121

Publication date

15.06.1996

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials, Condensed Matter Physics

Electronic version(s)

https://doi.org/10.1103/PhysRevB.53.16458 (Access: Unknown)
https://doi.org/10.1103/physrevb.53.16458 (Access: Unknown)