Modified Drude model for small gold nanoparticles surface plasmon resonance based on the role of classical confinement

@article{Kheirandish2020ModifiedDM,
  title={Modified Drude model for small gold nanoparticles surface plasmon resonance based on the role of classical confinement},
  author={Asef Kheirandish and Nasser Sepehri Javan and Hosein Mohammadzadeh},
  journal={Scientific Reports},
  year={2020},
  volume={10}
}
In this paper, we study the effect of restoration force caused by the limited size of a small metallic nanoparticle (MNP) on its linear response to the electric field of incident light. In a semi-classical phenomenological Drude-like model for small MNP, we consider restoration force caused by the displacement of conduction electrons with respect to the ionic positive background taking into account a free coefficient as a function of diameter of nanoparticle (NP) in the force term obtained by… 
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