Computer experiments on phonons and solitons in two-dimensional hexagonal crystals

A molecular dynamics computer simulation was carried out for two-dimensional anharmonic mass-spring model crystals. Instead of the square lattice crystals in our previous study, hexagonal lattice crystals were chosen. Interactions between the nearest neighbor and the next nearest neighbor atoms were...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2002-05, Vol.316, p.143-146
Main Authors: Itaba, M., Minato, A., Ozawa, S., Hiki, Y.
Format: Article
Language:English
Subjects:
Hexagonal crystal
Molecular dynamics simulation
Phonons
Solitons
Two-dimensional crystal
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Summary:A molecular dynamics computer simulation was carried out for two-dimensional anharmonic mass-spring model crystals. Instead of the square lattice crystals in our previous study, hexagonal lattice crystals were chosen. Interactions between the nearest neighbor and the next nearest neighbor atoms were taken into account. Mechanical excitations produced in the lattice by an input pulse displacement applied on the edge of the crystal were studied. Phonons and solitons were, respectively, produced when the input was small and not small. Our interest was focused on anticipating probable laboratory experiment of soliton production in real crystals.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(02)00443-X