Temperature insensitive optical alignment of the exciton in nanowire embedded GaN Quantum Dots

A. Balocchi; J. Renard; C. T. Nguyen; B. Gayral; T. Amand; H. Mariette; B. Daudin; G. Tourbot; X. Marie

doi:10.1103/PhysRevB.84.235310

Temperature insensitive optical alignment of the exciton in nanowire embedded GaN Quantum Dots

Materials Science 2015-05-28 v1

Authors: A. Balocchi , J. Renard , C. T. Nguyen , B. Gayral , T. Amand , H. Mariette , B. Daudin , G. Tourbot , X. Marie

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Abstract

We report on the exciton spin dynamics of nanowire embedded GaN/AlN Quantum Dots (QDs) investigated by time-resolved photoluminescence spectroscopy. Under a linearly polarized quasiresonant excitation we evidence the quenching of the exciton spin relaxation and a temperature insensitive degree of the exciton linear polarization, demonstrating the robustness of the optical alignment of the exciton spin in these nanowire embedded QDs. A detailed examination of the luminescence polarization angular dependence shows orthogonal linear exciton eigenstates with no preferential crystallographic orientation.

Keywords

exciton spin dynamics GaN/AlN quantum dots nanowire optical alignment time-resolved photoluminescence spin relaxation

Cite

@article{arxiv.1107.5644,
  title  = {Temperature insensitive optical alignment of the exciton in nanowire embedded GaN Quantum Dots},
  author = {A. Balocchi and J. Renard and C. T. Nguyen and B. Gayral and T. Amand and H. Mariette and B. Daudin and G. Tourbot and X. Marie},
  journal= {arXiv preprint arXiv:1107.5644},
  year   = {2015}
}

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13 pages, 5 figures

Temperature insensitive optical alignment of the exciton in nanowire embedded GaN Quantum Dots

Abstract

Keywords

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