Mie Scattering by a Charged Dielectric Particle

R. L. Heinisch, F. X. Bronold, and H. Fehske
Phys. Rev. Lett. 109, 243903 – Published 10 December 2012

Abstract

We study for a dielectric particle the effect of surplus electrons on the anomalous scattering of light arising from the transverse optical phonon resonance in the particle’s dielectric function. Excess electrons affect the polarizability of the particle by their phonon-limited conductivity, either in a surface layer (negative electron affinity) or the conduction band (positive electron affinity). We show that surplus electrons shift an extinction resonance in the infrared. This offers an optical way to measure the charge of the particle and to use it in a plasma as a minimally invasive electric probe.

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  • Received 30 May 2012

DOI:https://doi.org/10.1103/PhysRevLett.109.243903

© 2012 American Physical Society

Authors & Affiliations

R. L. Heinisch, F. X. Bronold, and H. Fehske

  • Institut für Physik, Ernst-Moritz-Arndt-Universität Greifswald, 17489 Greifswald, Germany

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Issue

Vol. 109, Iss. 24 — 14 December 2012

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Heating up of Superconductors
January 27, 2017

This collection marks the 30th anniversary of the discovery of high-temperature superconductors. The papers selected highlight some of the advances that have been made to date, both in understanding why these compounds behave in the way they do, and in utilizing them in applications. The papers included in the collection have been made free to read.

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