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Anomalous Hanle Effect in Quantum Dots : Evidence for Strong Dynamical Nuclear Polarization in Transverse Magnetic Field
O. Krebs, P. Maletinsky, T. Amand +5
Hanle effect is ubiquitous in the study of spin-related phenomena and has been used to determine spin lifetime, precession and transport in semiconductors. Here, we report an exper…
Room temperature Giant Spin-dependent Photoconductivity in dilute nitride semiconductors
F. Zhao, A. Balocchi, A. Kunold +6
By combining optical spin injection techniques with transport spectroscopy tools, we demonstrate a spin-photodetector allowing for the electrical measurement and active filtering o…
Hyperfine interaction in InAs/GaAs self-assembled quantum dots : dynamical nuclear polarization versus spin relaxation
O. Krebs, B. Eble, A. Lemaître +4
We report on the influence of hyperfine interaction on the optical orientation of singly charged excitons X+ and X- in self-assembled InAs/GaAs quantum dots. All measurements were…
Controlling the polarization eigenstate of a quantum dot exciton with light
Thomas Belhadj, Claire-Marie Simon, Thierry Amand +6
We demonstrate optical control of the polarization eigenstates of a neutral quantum dot exciton without any external fields. By varying the excitation power of a circularly polariz…