Interference in edge-scattering from monocrystalline gold flakes

Abstract

We observe strongly dissimilar scattering from two types of edges in hexagonal quasi-monocrystalline gold flakes with thicknesses around 1 micron. We identify as the origin the interference between a direct, quasi-specular scattering and an indirect scattering process involving an intermediate surface-plasmon state. The dissimilarity between the two types of edges is a direct consequence of the three-fold symmetry around the [111]-axis and the intrinsic chirality of a face-centered cubic lattice. We propose that this effect can be used to estimate flake thickness, crystal morphology, and surface contamination.

Divisions: College of Engineering & Physical Sciences > Systems analytics research institute (SARI)
College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: © 2018 The Authors. Funding: MSCA-COFUND-MULTIPLY - Grant number 713694 - H2020.
Full Text Link: https://arxiv.o ... /abs/1809.01542
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PURE Output Type: Working paper
Published Date: 2018-09-05
Authors: Boroviks, Sergejs
Wolff, Christian
Linnet, Jes
Yang, Yuanqing
Todisco, F.
Roberts, Alexander S.
Bozhevolnyi, Sergey I.
Hecht, Bert
Mortensen, N. A.

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