KIP-Veröffentlichungen

Jahr	2010
Autor(en)	F. Neubrech, A. Garcia-Etxarri, D. Weber, J. Bochterle, H. Shen, M. Lamy de la Chapelle, G. W. Bryant, J. Aizpurua and A. Pucci
Titel	Defect-induced activation of symmetry forbidden infrared resonances in individual metallic nanorods
KIP-Nummer	HD-KIP 10-14
KIP-Gruppe(n)	F6
Dokumentart	Paper
Keywords (angezeigt)	IR spectroscopy, nanoantennas, plasmonics
Quelle	Appl. Phys. Lett. 96 (2010) 213111
doi	10.1063/1.3437093
Abstract (en)	We report on the observation of second-order infrared (IR) plasmon resonances in lithographically prepared gold nanorods investigated by means of far-field microscopic IR spectroscopy. In addition to the fundamental antennalike mode, even and odd higher order resonances are observed under normal incidence of light. The activation of even-order modes under normal incidence is surprising since even orders are dipole-forbidden because of their centrosymmetric charge density oscillation. Performing atomic force microscopy and calculations with the boundary element method, we determine that excitation of even modes is enabled by symmetry breaking by structural deviations of the rods from an ideal, straight shape.
bibtex	@article{Neubrech10b, author = {Neubrech, F. and Garcia-Etxarri, A. and Weber, D. and Bochterle, J. and Shen, H. and Lamy de la Chapelle, M. and Bryant, G. W. and Aizpurua, J. and Pucci, A.}, title = {Defect-induced activation of symmetry forbidden infrared resonances in individual metallic nanorods}, journal = {Appl. Phys. Lett.}, year = {2010}, volume = {96}, number = {21}, pages = {213111}, doi = {10.1063/1.3437093}, url = {http://link.aip.org/link/?APL/96/213111/1} }
URL	Appl. Phys. Lett.

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