CHARACTERISTICS OF GAP DISCRETE BREATHERS IN CRYSTALS WITH NaCl STRUCTURE
Cite this article as:
Khadeeva L. Z., Dmitriev S. V. CHARACTERISTICS OF GAP DISCRETE BREATHERS IN CRYSTALS WITH NaCl STRUCTURE. Izvestiya VUZ. Applied Nonlinear Dynamics, 2010, vol. 18, iss. 6, pp. 85-92. DOI: https://doi.org/10.18500/0869-6632-2010-18-6-85-92
Molecular dynamics method is used to study the effect of mass ratio of anions and cations on the phonon spectra of the crystal with NaCl structure and on the discrete breathers existence conditions and properties of gap discrete breathers. We show that discrete breathers can be easily excited for the mass ratio less than 0.2, when the gap in the phonon spectrum is wide enough to support them. When the mass ratio is equal to 0.1 we could find at least three types of stable discrete breathers, differed by the number of large amplitude atoms and by polarization of oscillation.
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BibTeX
author = {L. Z. Khadeeva and S. V. Dmitriev},
title = {CHARACTERISTICS OF GAP DISCRETE BREATHERS IN CRYSTALS WITH NaCl STRUCTURE},
year = {2010},
journal = {Izvestiya VUZ. Applied Nonlinear Dynamics},
volume = {18},number = {6},
url = {https://old-andjournal.sgu.ru/en/articles/characteristics-of-gap-discrete-breathers-in-crystals-with-nacl-structure},
address = {Саратов},
language = {russian},
doi = {10.18500/0869-6632-2010-18-6-85-92},pages = {85--92},issn = {0869-6632},
keywords = {Nonlinear lattice dynamics,energy localization,discrete breather,ionic crystal,phonon spectrum.},
abstract = {Molecular dynamics method is used to study the effect of mass ratio of anions and cations on the phonon spectra of the crystal with NaCl structure and on the discrete breathers existence conditions and properties of gap discrete breathers. We show that discrete breathers can be easily excited for the mass ratio less than 0.2, when the gap in the phonon spectrum is wide enough to support them. When the mass ratio is equal to 0.1 we could find at least three types of stable discrete breathers, differed by the number of large amplitude atoms and by polarization of oscillation. }}