Supersonic N-Crowdions in a Two-Dimensional Morse Crystal

  • S. V. Dmitriev
  • E. A. Korznikova
  • A. P. Chetverikov
Solids and Liquids


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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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • S. V. Dmitriev
    • 1
    • 2
  • E. A. Korznikova
    • 1
  • A. P. Chetverikov
    • 3
  1. 1.Institute for Metal Superplasticity ProblemsRussian Academy of SciencesUfaRussia
  2. 2.National Research Tomsk State UniversityTomskRussia
  3. 3.Saratov National Research State UniversitySaratovRussia

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