Please use this identifier to cite or link to this item:
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
Zhou, Kun
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.
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.
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

Page view(s)

Updated on Jan 20, 2022

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.