Abstract
Optical properties of InP self-assembled quantum dots (SADs) were investigated in the presence of a magnetic field up to 10 T. By using a μm–sized InP/GaInP mesa, we succeeded in observing sharp photoluminescence (PL) lines from a single InP quantum dot. With the increase of the magnetic field, the diamagnetic shift and the Zeeman splitting were clearly observed in the Faraday configuration. The diamagnetic coefficient and the effective g-value of the confined excitons show fluctuations reflecting dispersion in the size and the shape of the quantum dots. The estimated g-value of the InP quantum dot is about half of that of the bulk InP because of the heavy-hole light-hole band mixing.
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