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Laurent S, Eble B, Krebs O, et al. Electrical control of hole spin relaxation in charge tunable InAs/GaAs quantum dots. Phys Rev Lett. 2005;94(14):147401doi: 10.1103/PhysRevLett.94.147401.
Laurent, S., Eble, B., Krebs, O., Lemaître, A., Urbaszek, B., Marie, X., Amand, T., & Voisin, P. (2005). Electrical control of hole spin relaxation in charge tunable InAs/GaAs quantum dots. Physical review letters, 94(14), 147401. https://doi.org/10.1103/PhysRevLett.94.147401
Laurent, S, et al. "Electrical control of hole spin relaxation in charge tunable InAs/GaAs quantum dots." Physical review letters vol. 94,14 (2005): 147401. doi: https://doi.org/10.1103/PhysRevLett.94.147401
Laurent S, Eble B, Krebs O, Lemaître A, Urbaszek B, Marie X, Amand T, Voisin P. Electrical control of hole spin relaxation in charge tunable InAs/GaAs quantum dots. Phys Rev Lett. 2005 Apr 15;94(14):147401. doi: 10.1103/PhysRevLett.94.147401. Epub 2005 Apr 12. PMID: 15904109.
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Phys Rev Lett. 2005 Apr 15;94(14):147401. doi: 10.1103/PhysRevLett.94.147401. Epub 2005 Apr 12.

Electrical control of hole spin relaxation in charge tunable InAs/GaAs quantum dots.

Physical review letters

S Laurent, B Eble, O Krebs, A Lemaître, B Urbaszek, X Marie, T Amand, P Voisin

Affiliations

  1. CNRS-Laboratoire de Photonique et Nanostructures, Route de Nozay, 91460 Marcoussis, France.

PMID: 15904109 DOI: 10.1103/PhysRevLett.94.147401

Abstract

We report on optical orientation of singly charged excitons (trions) in charge-tunable self-assembled InAs/GaAs quantum dots. When the charge varies from 0 to -2, the trion photoluminescence of a single quantum dot shows up and under quasiresonant excitation gets progressively polarized from zero to approximately 100%. This behavior is interpreted as the electric control of the trion thermalization process, which subsequently acts on the hole-spin relaxation driven in nanosecond time scale by the anisotropic electron-hole exchange. This is supported by the excitation spectroscopy and time-resolved measurements of a quantum dot ensemble.

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