Finite conductance governs the resonance transmission of thin metal slits at microwave frequencies

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Finite conductance governs the resonance transmission of thin metal slits at microwave frequencies

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Title: Finite conductance governs the resonance transmission of thin metal slits at microwave frequencies
Author: Suckling, James R.
Hibbins, Alastair P.
Lockyear, Matthew J.
Preist, T. W.
Sambles, J. Roy
Lawrence, Christopher R.
Citation: 92 (14), article 147401
Publisher: American Physical Society
Journal: Physical Review Letters
Date Issued: 2004
URI: http://hdl.handle.net/10036/23035
DOI: 10.1103/PhysRevLett.92.147401
Links: http://dx.doi.org/10.1103/PhysRevLett.92.147401 http://link.aps.org/abstract/PRL/v92/e147401
Abstract: Fabry-Perot–like resonant transmission of microwave radiation through a single subwavelength slit in a thick aluminum plate is quantified for a range of slit widths. Surprisingly, and in contrast to previous studies [e.g., Y. Takakura, Phys. Rev. Lett. 86, 5601 (2001)], the resonant frequency exhibits a maximum as a function of slit width, decreasing as the slit width is reduced to less than 2% of the incident wavelength. This result accords with a new model based on coupled surface plasmon theory taking into account the finite conductivity, and hence permittivity, of the metal. This is contrary to a common assumption that metals can be treated as infinitely conducting in this regime.
Type: Article
Description: James R. Suckling, Alastair P. Hibbins, Matthew J. Lockyear, T. W. Preist, J. Roy Sambles, and Christopher R. Lawrence, Physical Review Letters, Vol. 92, article 147401 (2004). "Copyright © 2004 by the American Physical Society."
ISSN: 0031-90071079-7114


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