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|Title:||Dynamics and stability of subsonic crowdion clusters in 2D Morse crystal||Authors:||Korznikova, E. A.
Shepelev, I. A.
Chetverikov, A. P.
Dmitriev, S. V.
Fomin, S. Yu
|Keywords:||Engineering::Mechanical engineering||Issue Date:||2019||Source:||Korznikova, E. A., Shepelev, I. A., Chetverikov, A. P., Dmitriev, S. V., Fomin, S. Y. & Zhou, K. (2019). Dynamics and stability of subsonic crowdion clusters in 2D Morse crystal. Journal of Experimental and Theoretical Physics, 127(6), 1009-1015. https://dx.doi.org/10.1134/S1063776118120063||Journal:||Journal of Experimental and Theoretical Physics||Abstract:||Recently, the concept of supersonic N-crowdions was offered. In molecular dynamics simulations, they can be excited by initial kick of N neighboring atoms located in one close-packed atomic row along this row. In the present study, in 2D Morse crystal, we apply initial kick to M neighboring atoms located in neighboring close-packed atomic rows along these rows. This way, we initiate crowdion clusters called subsonic M-crowdions. It is well known that static 1-crowdion in 2D Morse lattice is unstable; as a result, the interstitial atom leaves the close-packed atomic row and becomes immobile. However, we show that 1-crowdion moving with sufficiently large subsonic velocity remains in the close-packed atomic row. Crowdion clusters with M equal to or greater than 2 appear to be stable even at rest, with growing M transforming into prismatic dislocation loops. It is important to note that stable subsonic M-crowdions (M > 1) remain mobile and they can carry interstitial atoms over long distances.||URI:||https://hdl.handle.net/10356/150056||ISSN:||1063-7761||DOI:||10.1134/S1063776118120063||Rights:||© 2018 Pleiades Publishing, Inc. All rights reserved.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||MAE Journal Articles|
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