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Phys. Rev. B 68, 155427 (2003) [4 pages]

Plasmon dispersion relation of Au and Ag nanowires

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G. Schider, J. R. Krenn, A. Hohenau, H. Ditlbacher, A. Leitner, and F. R. Aussenegg
Institute for Experimental Physics, Karl-Franzens-University Graz and Erwin Schrödinger Institute for Nanoscale Research, Universitätsplatz 5, A-8010 Graz, Austria

W. L. Schaich
Department of Physics, Indiana University, Bloomington, Indiana 47405, USA

I. Puscasu*, B. Monacelli, and G. Boreman
School of Optics/CREOL, University of Central Florida, 4000 Central Florida Blvd., Orlando, Florida 32816, USA

Received 15 April 2003; revised 16 June 2003; published 28 October 2003

We have studied surface plasmon modes on silver and gold nanowires of a fixed cross section and different lengths, produced by electron beam lithography. The optically excited modes are determined by extinction spectroscopy and can be interpreted in terms of standing plasmon polariton waves. The eigenfrequencies are found to follow a dispersion relation similar to that for a planar metal/dielectric interface.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.68.155427
DOI:
10.1103/PhysRevB.68.155427
PACS:
78.67.Lt, 73.20.Mf, 73.22.Lp, 78.66.-w

*Present address: Ion-Optics, 411 Waverly Oaks Rd., Suite 144, Waltham, MA 02452, USA.

 
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