Interaction of propagating discrete breathers with a vacancy in a two-dimensional crystal

A.A. Kistanov, Sergey V. Dmitriev, Alexandr S. Semenov, Volodymyr Dubinko, D. A. Terent'ev

    Research outputpeer-review

    22 Scopus citations


    The interaction of discrete breathers (DBs) propagating along a close-packed atomic row with a vacancy situated in the same row has been studied by molecular dynamics in a two-dimensional monoatomic crystal with the Morse interatomic potential. It is established that DBs moving at a velocity below a certain threshold exhibit elastic repulsion from the vacancy, while DBs with velocities above this threshold are scattered on the vacancy. The interaction of DBs with a vacancy decreases the energy barrier for vacancy migration in the crystal.

    Original languageEnglish
    Pages (from-to)657-661
    Number of pages5
    JournalTechnical Physics Letters
    Issue number8
    StatePublished - Aug 2014

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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