Byszewski, M. and Chalupar, B. and Karlsson, K. F. and Pelucchi, E. and Oberli, D. and Rudra, A. and Kapon, E.

2008

Physica E-Low-Dimensional Systems & Nanostructures

Magneto-photoluminescence of heavy- and light-hole excitons in site-controlled pyramidal quantum dots

Validated

()

40

6

Pyramidal, site-controlled InGaAs/AlGaAs quantum dots (QDs) are studied by micro-photoluminescence (PL) spectroscopy in a magnetic field. The light-hole (LH) excitonic transitions exhibit diamagnetic shifts similar to those of their heavy-hole (HH) counterparts. From the evolution of the excitonic lines, effective g-factors of g=1.7 and 0.4 for HH and LH neutral excitons are inferred. (c) 2007 Elsevier B.V. All rights reserved.