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

doi:10.1134/S1063785014080069

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 output › peer-review

22 Scopus citations

Abstract

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 language	English
Pages (from-to)	657-661
Number of pages	5
Journal	Technical Physics Letters
Volume	40
Issue number	8
DOIs	https://doi.org/10.1134/S1063785014080069
State	Published - Aug 2014

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1134/S1063785014080069

Cite this

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title = "Interaction of propagating discrete breathers with a vacancy in a two-dimensional crystal",

abstract = "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.",

keywords = "Discrete breathers, Intrinsic Localized Modes, Solitons",

author = "A.A. Kistanov and Dmitriev, {Sergey V.} and Semenov, {Alexandr S.} and Volodymyr Dubinko and Terent'ev, {D. A.}",

note = "Funding Information: Acknowledgments. A.A. Kistanov thanks financial support from the Russian Science Foundation (grant no. 14 13 00982); S.V.D. thanks support from the Rus sian Federation Government Program 5 100 2020.",

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T1 - Interaction of propagating discrete breathers with a vacancy in a two-dimensional crystal

AU - Kistanov, A.A.

AU - Dmitriev, Sergey V.

AU - Semenov, Alexandr S.

AU - Dubinko, Volodymyr

AU - Terent'ev, D. A.

N1 - Funding Information: Acknowledgments. A.A. Kistanov thanks financial support from the Russian Science Foundation (grant no. 14 13 00982); S.V.D. thanks support from the Rus sian Federation Government Program 5 100 2020.

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N2 - 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.

AB - 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.

KW - Discrete breathers

KW - Intrinsic Localized Modes

KW - Solitons

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