Breathing dynamics of 2-crowdions in platinum

AM Bayazitov and EA Korznikova and IA Shepelev and PV Zakharov and SV Dmitriev, SARATOV FALL MEETING 2019: COMPUTATIONS AND DATA ANALYSIS: FROM NANOSCALE TOOLS TO BRAIN FUNCTIONS, 11459, 114590Z (2020).

DOI: 10.1117/12.2565760

Crowdions being interstitial atoms located in close-packed atomic rows, play an important role in relaxation processes that occur in metals and alloys under severe external influences, effectively transferring mass and energy. Recently the concept of a supersonic crowdion was expanded to an N-crowdion consisting in one dimensional motion of N extra atoms along a closely packed atomic row. In this study, the molecular dynamics method was used to study the motion of 1- and 2-crowdions in the fcc Pt lattice. The N-crowdion was excited by applying similar velocity to N neighboring atoms along a closely packed row. It was established that independently of the initial conditions, the crowdion exhibits quasiperiodic breather dynamics, while the average path length is practically independent of the initial velocity and configuration.

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