https://doi.org/10.1140/epjb/s10051-022-00405-x
Regular Article – Solid State and Materials
Scattering of the asymmetric 
kinks from a 
-symmetric perturbation: creating multiple kink–antikink pairs from phonons
1
Department of Physics, University of Sistan and Baluchestan, Zahedan, Iran
2
Institute for Theoretical Physics, Physics Department, Stellenbosch University, 7602, Matieland, South Africa
3
National Institute for Theoretical and Computational Sciences (NITheCS), 7602, Stellenbosch, South Africa
4
Young Researchers and Elite Club, Quchan Branch, Islamic Azad University, Quchan, Iran
Received:
31
May
2022
Accepted:
15
August
2022
Published online:
7
September
2022
Interaction of asymmetric kinks with a spatially localized -symmetric perturbation is investigated numerically. It is shown that when the kink (antikink) hits the defect from the gain side, a final velocity of the kink decreases (increases), while for the kink and antikink coming from the opposite direction, their final velocities remain unchanged. It is also found that when the kink interacts with the defect from the gain side, multiple pairs of the kink–antikink are formed from small-amplitude waves (phonons) in the final states depending on the initial velocity of the initial kink and parameter of the perturbation.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
