Supersonic N-Crowdions in a Two-Dimensional Morse Crystal

Journal Article · Thu Mar 15 04:00:00 EDT 2018 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776118030019· OSTI ID:22749980

Korznikova, E. A. ^[1]; Chetverikov, A. P. ^[2]

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1. Russian Academy of Sciences, Institute for Metal Superplasticity Problems (Russian Federation)
2. Saratov National Research State University (Russian Federation)

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.

• OSTI ID: 22749980
• Journal Information: Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 3 Vol. 126; ISSN JTPHES; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
CRYSTALS
MASS TRANSFER
MOLECULAR DYNAMICS METHOD
TWO-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL SYSTEMS