PHONON LINE-SHAPES AND EXCITATION-ENERGIES

Authors
FAK B DORNER B
Citation
B. Fak et B. Dorner, PHONON LINE-SHAPES AND EXCITATION-ENERGIES, Physica. B, Condensed matter, 234, 1997, pp. 1107-1108
Citations number
6
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
234
Year of publication
1997
Pages
1107 - 1108
Database
ISI
SICI code
0921-4526(1997)234:<1107:PLAE>2.0.ZU;2-K
Abstract
The basis for and consistency of fitting functions for anharmonic phon ons in condensed matter as observed by inelastic neutron scattering is examined. We suggest that solids and liquids can be described by the same fitting function. The interpretation of the parameter that repres ents the excitation energy is discussed using sum rules and other phys ical arguments, and its importance is illustrated for a few real syste ms.