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VOLUME 42 (1985) | ISSUE 10 | PAGE 419
Size effects in the vibrational spectrum of 10-A selenium particles
Raman spectra of ensembles of isolated and bound 10-A clusters of Se (a three-dimensional network) have been measured over the range 10-300 cm-1. Size effects have been discovered: discrete structure in the vibrational spectrum of an isolated cluster and an increase in the matrix element for Raman scattering by low-frequency modes. These size effects are seen for clusters of both types.