Conference paper

Publication year: 1999

Pages: 381-383

Journal: Physica B: Condensed Matter

Volume number: 263

ISSN: 0921-4526

DOI Link: https://doi.org/10.1016/S0921-4526(98)01390-8

Conference: 9th International Conference on Phonon Scattering in Condensed Matter (PHONONS 98)

Publisher: Elsevier

Abstract: 
We have measured by Raman scattering changes of the optic phonon energy and line width in Si and GaAs with isotopic composition. The phonon energies of isotopically pure samples show the expected dependence on the average atomic mass in Si and the reduced mass in GaAs, respectively, as well as small anharmonic contributions. In isotopically disordered samples we find frequency shifts of 1.15(20)cm(-1) for (Si0.5Si0.5)-Si-28-Si-30 and 0.31(20)cm(-1) for the TO phonon of (GaAs)-Ga-nat, induced by mass disorder which also contributes to the line broadening. We give theoretical estimates of these effects, (C) 1999 Elsevier Science B.V. All rights reserved.

Harvard Citation style: Widulle, F., Ruf, T., Göbel, A., Silier, I., Schönherr, E., Cardona, M., et al. (1999) Raman studies of isotope effects in Si and GaAs, Physica B: Condensed Matter, 263, pp. 381-383. https://doi.org/10.1016/S0921-4526(98)01390-8

APA Citation style: Widulle, F., Ruf, T., Göbel, A., Silier, I., Schönherr, E., Cardona, M., Camacho, J., Cantarero, A., Kriegseis, W., & Ozhogin, V. (1999). Raman studies of isotope effects in Si and GaAs. Physica B: Condensed Matter. 263, 381-383. https://doi.org/10.1016/S0921-4526(98)01390-8