Influence of moving breathers on vacancies migration
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classification
nlin.PS
cond-mat.mtrl-scinlin.AO
keywords
vacancybreathermovingvalueadjacentbreatherscentreddefect
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A vacancy defect is described by a Frenkel--Kontorova model with a discommensuration. This vacancy can migrate when interacts with a moving breather. We establish that the width of the interaction potential must be larger than a threshold value in order that the vacancy can move forward. This value is related to the existence of a breather centred at the particles adjacent to the vacancy.
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