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Surface Migration of Adsorbed Particles
Author(s) -
Kozhushner M. A.,
Prostnev A. S.,
Rozovskii M. O.,
Shub B. R.
Publication year - 1986
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221360220
Subject(s) - jump , adsorption , diffusion , relaxation (psychology) , surface diffusion , molecular physics , particle (ecology) , materials science , jump diffusion , lattice (music) , lattice diffusion coefficient , jump process , surface (topology) , chemistry , condensed matter physics , thermodynamics , physics , effective diffusion coefficient , geometry , mathematics , quantum mechanics , psychology , social psychology , medicine , oceanography , radiology , acoustics , magnetic resonance imaging , geology
A relaxation model of single adsorbed particle migration on the surface of solids is proposed. It is shown that the jump length is determined completely by an energy relaxation time for a continuous spectrum of the surface periodic potential. The jump length is found to exceed the lattice period appreciably if the adatom motion velocity is smaller than the sound speed in the solid. For this case an analytic expression for the diffusion coefficient is obtained which does not contain any fitting parameters.