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Superanomalous Skin Effect for Surface Plasmon Polaritons

I. A. Larkin, K. Keil, A. Vagov, M. D. Croitoru, and V. M. Axt
Phys. Rev. Lett. 119, 176801 – Published 24 October 2017

Abstract

It is commonly assumed that surface plasmon-polariton (SPP) excitations on a metal-dielectric interface decay exponentially inside the metallic sample. Here, we show that in a wide spectral interval the SPP field decays much slower, being inversely proportional to the distance to the interface modified by an additional logarithmic factor. This dependence differs from the standard anomalous skin effect and is provisionally referred to as superanomalous. Its origin is the nonlocality and the logarithmic singularity of the dielectric permittivity in metals. This type of decay is pronounced for SPP modes of higher frequencies, but it is suppressed for light waves.

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  • Received 31 March 2017

DOI:https://doi.org/10.1103/PhysRevLett.119.176801

© 2017 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Condensed Matter, Materials & Applied Physics

Authors & Affiliations

I. A. Larkin1, K. Keil2, A. Vagov2,*, M. D. Croitoru2, and V. M. Axt2

  • 1Institute of Microelectronics Technology, Russian Academy of Sciences, 142432 Chernogolovka, Russia
  • 2Institute for Theoretical Physics III, University of Bayreuth, 95440 Bayreuth, Germany

  • *alexei.vagov@uni-bayreuth.de

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Issue

Vol. 119, Iss. 17 — 27 October 2017

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