Spatially resolved quantum plasmon modes in metallic nano-films from first principles

@article{Andersen2012SpatiallyRQ,
  title={Spatially resolved quantum plasmon modes in metallic nano-films from first principles},
  author={Kirsten Andersen and Karsten Wedel Jacobsen and Kristian Sommer Thygesen},
  journal={arXiv: Mesoscale and Nanoscale Physics},
  year={2012}
}
Electron energy loss spectroscopy (EELS) can be used to probe plasmon excitations in nanostructured materials with atomic-scale spatial resolution. For structures smaller than a few nanometers quantum effects are expected to be important, limiting the validity of widely used semi-classical response models. Here we present a method to identify and compute spatially resolved plasmon modes from first principles based on a spectral analysis of the dynamical dielectric function. As an example we… 

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References

We note that exact solutions may be obtained for complex frequencies. However, this requires an analytical continuation of into the complex plane and will not be pursued in the present work