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Folded and confined one-dimensional plasmons in modulated wires

Florent Perez, Bernard Jusserand, Claus Dahl*, and Marcel Filoche

Laurence Ferlazzo-Manin and Bernard Etienne

  • France Télécom, Centre National d'Etudes des Télécommunications, Paris B, Laboratoire de Bagneux, 196 Avenue Henri Ravera, 92220 Bagneux, France

  • Laboratoire de Microstructures et Microélectronique, Centre National de la Recherche Scientifique, 196 Avenue Henri Ravera, 92220 Bagneux, France

  • *Present address: Siemens AG, Semiconductor Division, Otto-Hahn-Ring 6, 81739 Munich, Germany.
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Phys. Rev. B 54, R11098(R) – Published 15 October, 1996

DOI: https://doi.org/10.1103/PhysRevB.54.R11098

Abstract

We demonstrate theoretically and experimentally that one-dimensional plasmons confined in doped wires are either extended or longitudinally confined when the lateral width of the wires is periodically modulated. Theoretical dispersion curves, calculated within a classical framework, reproduce well the experimental dispersion deduced from Raman scattering on deep etched modulated wires. Zone-edge gap openings, increasing with the modulation amplitude, are exhibited. We show that deep etching allows good control of complex geometries and provides quasiabrupt boundary conditions.

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Phys. Rev. B 54, R11098(R)– Published 15 October, 1996
  • Received 22 April 1996

© 1996 American Physical Society

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