Mass transfer in the Frenkel-Kontorova chain initiated by molecule impact

A. Moradi Marjaneh, Danial Saadatmand, I. Evazzade, R. I. Babicheva, E. G. Soboleva, N. Srikanth, Kun Zhou, E. A. Korznikova, and S. V. Dmitriev

Phys. Rev. E 98, 023003 – Published 23 August 2018

Abstract

The Frenkel-Kontorova chain with a free end is used to study initiation and propagation of crowdions (antikinks) caused by impact of a molecule consisting of $K$ atoms. It is found that molecules with $1 < K < 10$ are more efficient in the initiation of crowdions as compared to a single atom ( $K = 1$ ) because the total energy needed to initiate the crowdions by molecules is smaller. This happens because a single atom can initiate in the chain only sharp, fast-moving crowdions that require relatively large energy. A molecule has finite length, and that is why it is able to excite a wider crowdion with a smaller velocity and smaller energy. Our results can shed light on the atomistic mechanisms of mass transfer in crystals subject to atom and molecule bombardment.

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Received 21 May 2018

DOI:https://doi.org/10.1103/PhysRevE.98.023003

Physics Subject Headings (PhySH)

Anharmonic lattice dynamics Crystal structure Phonons

Solitons

Condensed Matter, Materials & Applied PhysicsNonlinear Dynamics

Authors & Affiliations

A. Moradi Marjaneh^1,*, Danial Saadatmand², I. Evazzade³, R. I. Babicheva⁴, E. G. Soboleva⁵, N. Srikanth⁶, Kun Zhou⁴, E. A. Korznikova^7,8, and S. V. Dmitriev^7,9

¹Young Researchers and Elite Club, Quchan Branch, Islamic Azad University, Quchan, Iran
²Department of Physics, University of Sistan and Baluchestan, Zahedan, Iran
³Department of Physics, Faculty of Science, Ferdowsi University of Mashhad, 91775-1436, Mashhad, Iran
⁴School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798, Singapore
⁵Yurga Institute of Technology (Branch), National Research Tomsk Polytechnic University, 652050 Yurga, Russia
⁶Interdisciplinary Graduate School, Nanyang Technological University, Singapore 639798, Singapore
⁷Institute for Metals Superplasticity Problems, Russian Academy of Sciences, Ufa, 450001 Russia
⁸Ufa State Aviation Technical University, 450008, Ufa, Russia
⁹National Research Tomsk State University, Lenin Avenue 36, 634050 Tomsk, Russia

^*moradimarjaneh@gmail.com

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Issue

Vol. 98, Iss. 2 — August 2018

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