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arXiv · 1308.0508

Tomography of particle plasmon fields from electron energy loss spectroscopy

Anton Hörl·Andreas Trügler·Ulrich Hohenester
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Abstract

We theoretically investigate electron energy loss spectroscopy (EELS) of metallic nanoparticles in the optical frequency domain. Using a quasistatic approximation scheme together with a plasmon eigenmode expansion, we show that EELS can be rephrased in terms of a tomography problem. For selected single and coupled nanoparticles we extract the three-dimensional plasmon fields from a collection of rotated EELS maps. Our results pave the way for a fully three-dimensional plasmon-field tomography and establish EELS as a quantitative measurement device for plasmonics.

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Anton Hörl, Andreas Trügler, Ulrich Hohenester. 2013-08-02. Tomography of particle plasmon fields from electron energy loss spectroscopy. https://doi.org/10.1103/physrevlett.111.076801

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