title: Electrical control of a single Mn atom in a quantum dot.
abstract: We report on the reversible electrical control of the magnetic properties of a single Mn atom in an individual quantum dot. Our device permits us to prepare the dot in states with three different electric charges, 0, +1e, and -1e which result in dramatically different spin properties, as revealed by photoluminescence. Whereas in the neutral configuration the quantum dot is paramagnetic, the electron-doped dot spin states are spin rotationally invariant and the hole-doped dot spins states are quantized along the growth direction.
authors.affiliation: CEA-CNRS group Nanophysique et Semiconducteurs, Laboratoire de Spectrométrie Physique, CNRS and Université Joseph Fourier-Grenoble 1, Boîte Postale 87, F-38402 St. Martin d'Hères, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Léger
authors.forename: L
authors.initials: L
authors.lastname: Besombes
authors.forename: J
authors.initials: J
authors.lastname: Fernández-Rossier
authors.forename: L
authors.initials: L
authors.lastname: Maingault
authors.forename: H
authors.initials: H
authors.lastname: Mariette