On the surface plasmon wave propagation along single metal wire

doi:10.1088/1674-1056/21/11/117303

Abstract Recently, the single metal wire (SW) becomes attractive for its potential applications in terahertz and higher frequency range. However, as the most simple and typical surface plasmon polariton (SPP) transmission line, its study seems far from enough. Many important transmission behaviours have not been explained satisfactorily from the viewpoint of physics. In this paper, making use of the modified Drude model (MDM) based on the Sommerfeld theory, the transmission behaviours of SPPs along SW are systemically investigated theoretically. Some important physical phenomena such as the mode transformation, the lifetime of radiative mode and the resonance frequency are revealed, and their mechanisms are explored. The results obtained in the paper will facilitate the general understanding of the features and the physical essence of the SPP transmission, not only for SW itself but also for other SPP transmission lines.

Keywords: surface plasmon single metal wire wave propagation

Received: 23 February 2012
Revised: 02 May 2012
Accepted manuscript online:

PACS:	73.20.Mf	(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
	84.40.Az	(Waveguides, transmission lines, striplines)
	71.36.+c	(Polaritons (including photon-phonon and photon-magnon interactions))

Fund: Project supported by the Specialized Research Fund for Doctoral Program of Higher Education of China (Grant No. 20100185110022), the National Basic Research Program of China (Grant No. 2007CB310401), and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. ZYGX2011J037).

Corresponding Authors: Liu Sheng-Gang
E-mail: liusg@uestc.edu.cn

Cite this article:

Zhong Ren-Bin (钟任斌), Liu Wei-Hao (刘维浩), Zhou Jun (周俊), Liu Sheng-Gang (刘盛纲 ) On the surface plasmon wave propagation along single metal wire 2012 Chin. Phys. B 21 117303

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