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Supersonic and multiple topological excitations in the driven frenkel-kontorova model with exponential interaction
1Institute of Physics, National Ukrainian Academy of Sciences, 03650 Kiev-39, Ukraine.
Abstract:
The criteria for the existence of supersonic and multiple topological excitations (kinks) in the driven Frenkel-Kontorova model (a chain of atoms placed into an external periodic potential) with anharmonic (exponential) interatomic interactions are studied.