Influence of the Magnetic Dipole Moment of a Metal Nanoellipsoid on the Scattering of Electromagnetic Waves

  • D. V. Butenko Institute of Physics, Nat. Acad. of Sci. of Ukraine, National University of Kyiv-Mohyla Academy
  • P. M. Tomchuk Institute of Physics, Nat. Acad. of Sci. of Ukraine
Keywords: electromagnetic radiation, metal nanoparticle, nanoellipsoid

Abstract

The influence of the magnetic dipole moment of a non-spherical metal nanoparticle on the scattering of electromagnetic radiation by the particle has been studied in the framework of the kinetic approach. Analytical expressions for the scattering cross-section of spheroidal particles are obtained, and their dependence on the incident radiation wavelength and the nanoparticle eccentricity is analyzed. The contribution of a magnetic moment to the scattering at frequencies far from the plasmon resonance is shown to be comparable with that of the electric moment, with the ratio between the magnetic and electric moment contributions being maximum for spherical nanoparticles. The calculations are performed for an arbitrary ratio between the particle size and the free electron path, which enables our results to be compared with the Mie theory in the case where the electron scattering in the particle bulk dominates.

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Published
2019-01-06
How to Cite
Butenko, D., & Tomchuk, P. (2019). Influence of the Magnetic Dipole Moment of a Metal Nanoellipsoid on the Scattering of Electromagnetic Waves. Ukrainian Journal of Physics, 61(3), 255. https://doi.org/10.15407/ujpe61.03.0255
Section
Nanosystems