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Title: Mapping Magnetic Near-Field Distributions of Plasmonic Nanoantennas
Authors: Denkova, Denitza *
Verellen, Niels * ×
Silhanek, Alejandro V
Valev, Ventsislav K
Van Dorpe, Pol
Moshchalkov, Victor #
Issue Date: 6-Mar-2013
Publisher: American Chemical Society
Series Title: ACS Nano vol:7 issue:4 pages:3168-3176
Abstract: We present direct experimental mapping of the lateral magnetic near-field distribution in plasmonic nanoantennas using aperture scanning near-field optical microscopy (SNOM). By means of full-field simulations it is demonstrated how the coupling of the hollow-pyramid aperture probe to the nanoantenna induces an effective magnetic dipole which efficiently excites surface plasmon resonances only at lateral magnetic field maxima. This excitation in turn affects the detected light intensity enabling the visualization of the lateral magnetic near-field distribution of multiple odd and even order plasmon modes with subwavelength spatial resolution.
ISSN: 1936-0851
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
* (joint) first author
× corresponding author
# (joint) last author

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