31 January 1994 Quantum size oscillations in optical and electric properties of superthin metal films
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Proceedings Volume 2089, 9th International Conference on Fourier Transform Spectroscopy; (1994) https://doi.org/10.1117/12.166616
Event: Fourier Transform Spectroscopy: Ninth International Conference, 1993, Calgary, Canada
Abstract
Prepared by radio frequency sputtering superthin Nb and Cu films on (alpha) -quartz and silicon have been studied. We have measured reflectivity and transmittance IR spectra of the films and estimated the imaginary part of their dielectric function from these spectra. The oscillations with a period of 6 angstrom were found on the film thickness dependence of this value for niobium and with a period of 2 angstrom for copper. The same oscillations exhibit in dc resistivity measurements too. We assume that oscillations are due to quantum size effects in the film, because their periods are of the order of the Fermi wavelengths in these metals. Similar effects were observed in surface polariton and surface electromagnetic wave measurements. Temperature measurements of reflectivity and dc resistance have shown that the period as well as the relative amplitude of oscillations are practically temperature independent.
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L. A. Kuzik, L. A. Kuzik, Yuriy Y. Petrov, Yuriy Y. Petrov, V. A. Yakovlev, V. A. Yakovlev, Guerman N. Zhizhin, Guerman N. Zhizhin, Fedor A. Pudonin, Fedor A. Pudonin, Peter Grosse, Peter Grosse, Volkmar Offerman, Volkmar Offerman, } "Quantum size oscillations in optical and electric properties of superthin metal films", Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994); doi: 10.1117/12.166616; https://doi.org/10.1117/12.166616
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