Abstract
Optical absorption spectra are reported for Si, Ge and SiGe clusters. The samples were prepared by the simultaneous condensation of rare gas and Si or Ge vapor onto a liquid helium temperature substrate. The dependence of the strength of individual absorption lines on the vapor/argon ratio allowed a tentative assignment of spectral features to one, two, three and four atom clusters. Empirical, extended Hückel calculations were made and, where meaningful, are compared with experiment.
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Martin, T.P., Schaber, H. Optical absorption of matrix isolated Si and Ge clusters. Z Physik B 35, 61–65 (1979). https://doi.org/10.1007/BF01322082
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DOI: https://doi.org/10.1007/BF01322082