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Generation of Traveling Surface Plasmon Waves by Free-Electron Impact

M. V. Bashevoy·F. Jonsson·A. V. Krasavin·N. I. Zheludev·Y. Chen·M. I. Stockman
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Abstract

The injection of a beam of free 50 keV electrons into an unstructured gold surface creates a highly localized source of traveling surface plasmons with spectrum centered around 1.8 eV. The plasmons were detected by a controlled decoupling into light with a grating at a distance from the excitation point. The dominant contribution to the plasmon generation appears to come from the recombination of d-band holes created by the electron beam excitation.

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M. V. Bashevoy, F. Jonsson, A. V. Krasavin, N. I. Zheludev, Y. Chen, M. I. Stockman. 2006-04-28. Generation of Traveling Surface Plasmon Waves by Free-Electron Impact. https://doi.org/10.1021/nl060941v

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