Plasmonic performance of AuxAgyCu1-x-y alloys from many-body perturbation theory.

  title={Plasmonic performance of AuxAgyCu1-x-y alloys from many-body perturbation theory.},
  author={Okan K. Orhan and David D. O’Regan},
  journal={Journal of physics. Condensed matter : an Institute of Physics journal},
  volume={31 31},
  • O. K. Orhan, D. O’Regan
  • Published 19 December 2018
  • Materials Science
  • Journal of physics. Condensed matter : an Institute of Physics journal
We present a detailed appraisal of the optical and plasmonic properties of ordered alloys of the form AuxAgyCu1-x-y, as predicted by means of first-principles many-body perturbation theory augmented by a semi-empirical Drude-Lorentz model. In benchmark simulations on elemental Au, Ag, and Cu, we find that the random-phase approximation (RPA) fails to accurately describe inter-band transitions when it is built upon semi-local approximate Kohn-Sham density-functional theory band-structures. We… 
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