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Phase and Spin Relaxation Dynamics in High-Quality Single GaN/AlGaN Quantum Well

  • M. Gallart
  • M. Ziegler
  • B. Hönerlage
  • P. GilliotEmail author
  • E. Feltin
  • J.-F. Carlin
  • R. Butté
  • N. Grandjean
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 159)

Abstract

We report on the first time measurement, using four-wave mixing, of the dephasing time of excitons in a high-quality GaN/Al0.05Ga0.95N quantum well. The comparison with the exciton-spin lifetime, determined via pump-probe spectroscopy using polarized laser pulses, shows that spin relaxation occurs in the motional narrowing regime.

Keywords

Spin Relaxation Large Exciton Binding Energy Exciton Density Dephasing Rate AlGaN Barrier 
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References

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    D. Lagarde, A. Balocchi, H. Carrère, P. Renucci, T. Amand, X. Marie, S. Founta, and H. Mariette, “Room-temperature optical orientation of the exciton spin in cubic GaN∕AlN quantum dots” Phys. Rev. B 77, 041304(R) (2008).Google Scholar
  2. 2.
    J. Besbas, A. Gadalla, M. Gallart, O. Crégut, B. Hönerlage, P. Gilliot, E. Feltin, J.-F. Carlin, R. Butté, and N. Grandjean, “Spin relaxation of free excitons in narrow GaN/AlxGa1−xN quantum wells” Phys. Rev. B 82, 195302 (2010).Google Scholar

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • M. Gallart
    • 1
  • M. Ziegler
    • 1
  • B. Hönerlage
    • 1
  • P. Gilliot
    • 1
    Email author
  • E. Feltin
    • 2
  • J.-F. Carlin
    • 2
  • R. Butté
    • 2
  • N. Grandjean
    • 2
  1. 1.IPCMS–DON, UMR 7504, CNRS–ULPStrasbourg Cedex 2France
  2. 2.ICMP, École Polytechnique Fédérale de Lausanne (EPFL)LausanneSwitzerland

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