Mass transport of adsorbates near a discontinuous structural phase transition

E. Granato, S. C. Ying, K. R. Elder, Tapio Ala-Nissilä

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

288 Lataukset (Pure)

Abstrakti

We study the mass transport dynamics of an adsorbed layer near a discontinuous incommensurate striped-honeycomb phase transition via numerical simulations of a coarse-grained model focusing on the motion of domain walls rather than individual atoms. Following an initial step profile created in the incommensurate striped phase, an intermediate hexagonal incommensurate phase nucleates and grows, leading to a bifurcation into two sharp profiles propagating in opposite directions as opposed to broad profiles induced by atomic diffusive motion. Our results are in agreement with recent numerical simulations of a microscopic model as well as experimental observations for the Pb/Si(111) adsorbate system.

AlkuperäiskieliEnglanti
Artikkeli235412
Sivut1-5
JulkaisuPhysical Review B
Vuosikerta94
Numero23
DOI - pysyväislinkit
TilaJulkaistu - 9 joulukuuta 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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