Abstract
An interstitial atom placed in a close-packed atomic row of a crystal is called crowdion. Such defects are highly mobile; they can move along the row, transferring mass and energy. We generalize the concept of a classical supersonic crowdion to an N-crowdion in which not one but N atoms move simultaneously with a high velocity. Using molecular dynamics simulations for a close-packed two-dimensional Morse crystal, we show that N-crowdions transfer mass much more efficiently, because they are capable of covering large distances while having a lower total energy than that of a classical 1-crowdion.
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Original Russian Text © S.V. Dmitriev, E.A. Korznikova, A.P. Chetverikov, 2018, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2018, Vol. 153, No. 3, pp. 417–423.
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Dmitriev, S.V., Korznikova, E.A. & Chetverikov, A.P. Supersonic N-Crowdions in a Two-Dimensional Morse Crystal. J. Exp. Theor. Phys. 126, 347–352 (2018). https://doi.org/10.1134/S1063776118030019
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DOI: https://doi.org/10.1134/S1063776118030019