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Mixed Phonon Mode In C24Rb

Published online by Cambridge University Press:  15 February 2011

Satoru Funahashi
Affiliation:
Division of Physics, Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken 319-11, Japan
Tamotsu Kondow
Affiliation:
Division of Physics, Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken 319-11, Japan Department of Chemistry, Faculty of Science, the University of Tokyo, Bunkyo-ku, Tokyo 113, Japan
Masashi Iizumi
Affiliation:
Division of Physics, Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken 319-11, Japan
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Abstract

The [001] L-mode phonon excitations of C24Rb were studied by neutron inelastic scattering in the region where the phonon dispersion curve of the acoustic branch anticrosses the transverse Einstein oscillation level. The interaction between the longitudinal collective mode and the transverse Einstein mode could be observed only in the temperature region where the rubidium atoms form an ordered structure. The mechanism of the interactions between the transverse and longitudinal modes is discussed in relation to the symmetry of the atomic position of rubidium.

Type
Research Article
Copyright
Copyright © Materials Research Society 1983

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References

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