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Highly Enhanced Transport by Supersonic N ‐Crowdions
Author(s) -
Dmitriev Sergey V.,
Medvedev Nikolay N.,
Chetverikov Alexander P.,
Zhou Kun,
Velarde Manuel G.
Publication year - 2017
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201700298
Subject(s) - supersonic speed , atom (system on chip) , chemistry , crystal (programming language) , molecular dynamics , atomic physics , morse potential , chemical physics , molecular physics , physics , computational chemistry , mechanics , computer science , embedded system , programming language
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 transporting mass and energy. In the present study the concept of the classical supersonic crowdion is generalized to N ‐crowdion in which not one but N atoms move simultaneously at a high speed. With the help of molecular dynamics simulations for fcc Morse crystal it is demonstrated that N ‐crowdions are much more efficient in mass transport being able to propagate through larger distances having smaller total energy than the classical 1‐crowdion.