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

✍ Scribed by M. Byszewski; B. Chalupar; K.F. Karlsson; D.Y. Oberli; E. Pelucchi; A. Rudra; E. Kapon

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 189 KB
• Volume: 40
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/j.physe.2007.08.047

✦ Synopsis

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 ¼ 1.7 and 0.4 for HH and LH neutral excitons are inferred.