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Paper   IPM / Nano-Sciences / 13949
School of Nano Science
  Title:   Quantum nonlocal effects on optical properties of spherical nanoparticles
  Author(s):  Afshin Moradi
  Status:   Published
  Journal: Phys. Plasmas
  No.:  2
  Vol.:  22
  Year:  2015
  Pages:   022119(1-5)
  Publisher(s):   AIP Publishing
  Supported by:  IPM
To study the scattering of electromagnetic radiation by a spherical metallic nanoparticle with quantum spatial dispersion, we develop the standard nonlocal Mie theory by allowing for the excitation of the quantum longitudinal plasmon modes. To describe the quantum nonlocal effects, we use the quantum longitudinal dielectric function of the system. As in the standard Mie theory, the electromagnetic fields are expanded in terms of spherical vector wavefunctions. Then, the usual Maxwell boundary conditions are imposed plus the appropriate additional boundary conditions. Examples of calculated extinction spectra are presented, and it is found that the frequencies of the subsidiary peaks, due to quantum bulk plasmon excitations exhibit strong dependence on the quantum spatial dispersion

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