Optically probing the fine structure of a single Mn atom in an InAs quantum dot

A. Kudelski, A. Lemaître, A. Miard, P. Voisin, T. C M Graham, R. J. Warburton, O. Krebs

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Abstract

We report on the optical spectroscopy of a single InAs/GaAs quantum dot doped with a single Mn atom in a longitudinal magnetic field of a few Tesla. Our findings show that the Mn impurity is a neutral acceptor state A0 whose effective spin J=1 is significantly perturbed by the quantum dot potential and its associated strain field. The spin interaction with photocarriers injected in the quantum dot is shown to be ferromagnetic for holes, with an effective coupling constant of a few hundreds of µeV, but vanishingly small for electrons. © 2007 The American Physical Society.

Original languageEnglish
Article number247209
JournalPhysical Review Letters
Volume99
Issue number24
DOIs
Publication statusPublished - 14 Dec 2007

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