Dielectric function dependence on temperature for Au and Ag

The dielectric functions of Au and Ag are measured using a spectral ellipsometer. The temperature dependence parameters ωp, τ, and ∞, in the Drude-Sommerfeld model have been studied. Furthermore, we provide an empirical function to describe the temperature dependence of the dielectric function for A...

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Published inJapanese Journal of Applied Physics Vol. 53; no. 8S2; pp. 8 - 1-08MG02-5
Main Authors Chen, Yu-Jen, Lee, Meng-Chang, Wang, Chih-Ming
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 2014
Subjects
Dielectrics
Empirical analysis
Gold
Mathematical models
Plasmonics
Silver
Spectra
Temperature dependence
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Summary:The dielectric functions of Au and Ag are measured using a spectral ellipsometer. The temperature dependence parameters ωp, τ, and ∞, in the Drude-Sommerfeld model have been studied. Furthermore, we provide an empirical function to describe the temperature dependence of the dielectric function for Au and Ag. The empirical function shows a good agreement with previous results. Through the empirical function, one can obtain the dielectric constant at arbitrary temperature and wavelength. This database is useful for the applications that use surface plasmon (SP) resonance at high temperatures, such as the plasmonic thermal emitter, SP-assisted thermal cancer treatment and so on.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.53.08MG02