INTRINSIC RESONANT MODES FOR A ONE-DIMENSIONAL LATTICE WITH A SOFT OPTIC MODE

Authors
KISELEV SA LAI R SIEVERS AJ
Citation
Sa. Kiselev et al., INTRINSIC RESONANT MODES FOR A ONE-DIMENSIONAL LATTICE WITH A SOFT OPTIC MODE, Physical review. B, Condensed matter, 57(6), 1998, pp. 3402-3405
Citations number
22
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
57
Issue
6
Year of publication
1998
Pages
3402 - 3405
Database
ISI
SICI code
0163-1829(1998)57:6<3402:IRMFAO>2.0.ZU;2-3
Abstract
Localization of lattice vibrations is investigated for a soft zone-cen ter optic mode overlapping the acoustic spectrum of an anharmonic one- dimensional diatomic lattice. An intrinsic resonant mode is found belo w the plane-wave optic spectrum. Using numerical methods the frequency and eigenvector of the intrinsic resonant mode has been measured as a function of its amplitude and the optic-mode frequency. Molecular-dyn amics simulations show that these localized modes are stable.