Anharmonic Resonant Modes in Perfect Crystals

摘要

Intrinsic resonant modes are predicted for a soft anharmonic lattice. The localization properties are similar to those of a harmonic resonant mode due to a force constant softening but the lifetime of the former is smaller than that of the latter. An activation energy is required to produce the anharmonic resonant mode spectrum and the thermodynamic properties of these intrinsic defects are found to mimic some of those identified with vacancies in quantum solids. Keywords: Quantum theory; Solid state physics; Reprints. (JHD)