https://doi.org/10.1140/epjb/e2014-50343-6
Regular Article
Head-on and head-off collisions of discrete breathers in two-dimensional anharmonic crystal lattices
1 Institute for Metals Superplasticity
Problems, Russian Academy of Science, 39 Khalturin St., 450001
Ufa,
Russia
2 St. Petersburg State Polytechnical
University, ul. Politekhnicheskaya
29, 195251
St. Petersburg,
Russia
3 Department of Physics, Saratov State
University, Astrakhanskaya
83, 410012
Saratov,
Russia
4 Instituto Pluridisciplinar,
Universidad Complutense, Paseo Juan
XXIII, 1, 28040
Madrid,
Spain
a
e-mail: mgvelarde@pluri.ucm.es
Received:
27
May
2014
Received in final form:
1
July
2014
Published online:
17
September
2014
Collisions of discrete breathers (DB) moving toward each other along neighboring close packed atomic rows in a 2D crystal lattice are investigated by molecular dynamics computer simulations. It is shown that a DB can draw energy from the other and emerge from the collision with amplitude much greater than its initial amplitude.
Key words: Solid State and Materials
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2014
