Magneto-photoluminescence in high magnetic fields from InGaAs/GaAs quantum dots formed in tetrahedral-shaped recesses

K. Uchida, N. Miura, Y. Sakuma, Y. Awano, T. Futatsugi, N. Yokoyama

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Abstract

Novel GaAs/InGaAs/GaAs quantum dot (QD) structures in tetrahedral-shaped recesses formed on a (111)B GaAs substrate are fabricated using metalorganic vapor-phase epitaxy. Magneto-photoluminescence (PL) measurement are performed under pulsed high magnetic fields up to 40 T applied parallel and perpendicular to the growth direction of the QD. The diamagnetic shift of the PL originating from QD are observed. The amount of the shift is less than that of the PL from quantum wells for both configurations, indicating strong zero-dimensional quantum confinement.

Original languageEnglish
Pages (from-to)247-251
Number of pages5
JournalPhysica B: Condensed Matter
Volume249-251
DOIs
Publication statusPublished - 1998 Jun 17

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Keywords

  • InGaAs/GaAs
  • Magneto-photoluminescence
  • Quantum dots
  • Tetrahedral-shaped recess

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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