Article (Scientific journals)
Mapping Magnetic Near-Field Distributions of Plasmonic Nanoantennas
Denkova, D; Verellen, N; Silhanek, Alejandro et al.
2013In ACS Nano
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Keywords :
SNOM; plasmonics
Abstract :
[en] We present direct experimental mapping of the lateral magnetic near-field distribution in plasmonic nanoantennas using aperture scanning nearfield 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.
Disciplines :
Physics
Author, co-author :
Denkova, D;  Katholieke Universiteit Leuven - KUL
Verellen, N;  Katholieke Universiteit Leuven - KUL
Silhanek, Alejandro  ;  Université de Liège - ULiège > Département de physique > Physique de la matière condensée
Valev, V;  Katholieke Universiteit Leuven - KUL
Van Dorpe, P;  IMEC
Moshchalkov, V;  Katholieke Universiteit Leuven - KUL
Language :
English
Title :
Mapping Magnetic Near-Field Distributions of Plasmonic Nanoantennas
Publication date :
2013
Journal title :
ACS Nano
ISSN :
1936-0851
eISSN :
1936-086X
Publisher :
American Chemical Society, Washington, United States - District of Columbia
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 April 2013

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