Frenkel-Kontorova model with a transversal degree of freedom : static properties of kinks
In: Physical review. B, Condensed matter, Jg. 48 (1993), Heft 6, S. 3734-3743
academicJournal
- print, 23 ref
Zugriff:
We consider a generalised Frenkel-Kontorova (FK) model with a transversal degree of freedom proposed by Braun and Kivshar [Phys. Rev. B 44, 7694 (1991)]. The model describes an atomic chain subjected to a two-dimensional (2D) substrate potential that is periodic in one direction and parabolic in the transversal direction, the interatomic interaction being exponentially repulsive. The ground state of the system undergoes a phase transition from the trivial one-dimensional (1D) to a quasi-2D state when the repulsion exceeds a certain critical value. The quasi-2D ground state admits two different types of kinks, «massive,» kinks which may be considered as a generalisation of the kinks of the standard 1D FK chain, and «nonmassive,» (phase) kinks which appear to be due to dimerisation of the ground state.
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Frenkel-Kontorova model with a transversal degree of freedom : static properties of kinks
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Autor/in / Beteiligte Person: | BRAUN, O. M ; CHUBYKALO, O. A ; KIVSHAR, Y. S ; VAZQUEZ, L |
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Zeitschrift: | Physical review. B, Condensed matter, Jg. 48 (1993), Heft 6, S. 3734-3743 |
Veröffentlichung: | Woodbury, NY; Woodbury, NY: American Institute of Physics, American Physical Society, 1993 |
Medientyp: | academicJournal |
Umfang: | print, 23 ref |
ISSN: | 0163-1829 (print) |
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