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Author Belykh, V. V. ♦ Yakovlev, D. R. ♦ Bayer, M. ♦ Schindler, J. J. ♦ Bree, J. van ♦ Koenraad, P. M. ♦ Silov, A. Yu. ♦ Averkiev, N. S.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ ANISOTROPY ♦ DISPERSIONS ♦ ELECTRONS ♦ FARADAY EFFECT ♦ INDIUM ARSENIDES ♦ INDIUM PHOSPHIDES ♦ LANDE FACTOR ♦ MAGNETIC FIELDS ♦ MEV RANGE 10-100 ♦ OPTICAL PUMPING ♦ PHOTOLUMINESCENCE ♦ QUANTUM DOTS ♦ TIME RESOLUTION ♦ WAVELENGTHS
Abstract The electron g factor in an ensemble of InAs/InP quantum dots with emission wavelengths around 1.4 μm is measured using time-resolved pump-probe Faraday rotation spectroscopy in different magnetic field orientations. Thereby, we can extend recent single dot photoluminescence measurements significantly towards lower optical transition energies through 0.86 eV. This allows us to obtain detailed insight into the dispersion of the recently discovered g factor anisotropy in these infrared emitting quantum dots. We find with decreasing transition energy over a range of 50 meV a strong enhancement of the g factor difference between magnetic field normal and along the dot growth axis, namely, from 1 to 1.7. We argue that the g factor cannot be solely determined by the confinement energy, but the dot asymmetry underlying this anisotropy therefore has to increase with increasing dot size.
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-08-28
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 120
Issue Number 8


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