Dependence of Growth Parameters of Atomic Chains on Changes in the Substrate Temperature

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Resumo

The growth and evolution of one-dimensional nanostructures on metal stepped surfaces were studied using the kinetic Monte Carlo method. The distribution of nanochain lengths was shown to change differently when the substrate was heated and cooled. Regularities are described that connect the nature of changes in the length distribution and the relative values of diffusion barriers for adatoms on the surface, which will make it possible to predict the length distribution of the resulting one-dimensional nanostructures.

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Sobre autores

A. Syromyatnikov

Lomonosov Moscow State University; Semenov Federal Research Center for Chemical Physics of the RAS

Autor responsável pela correspondência
Email: ag.syromyatnikov@physics.msu.ru
Rússia, Moscow; Moscow

S. Kudryashov

Lomonosov Moscow State University

Email: ag.syromyatnikov@physics.msu.ru
Rússia, Moscow

A. Klavsyuk

Lomonosov Moscow State University

Email: ag.syromyatnikov@physics.msu.ru
Rússia, Moscow

A. Saletsky

Lomonosov Moscow State University

Email: ag.syromyatnikov@physics.msu.ru
Rússia, Moscow

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2. Fig. 1. Schematic representation of the main events in the calculation model and diffusion barriers for these events

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3. Fig. 2. Equilibrium distributions of chain lengths in the Ag/Pt(997) system at low temperature (dashed line) and high temperature (solid line)

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4. Fig. 3. Diagram of nanocircuit length distribution as a function of initial (T1) and final (T2) temperature: 1 - sample heating, average length increases; 2 - distribution does not change; 3 - sample cooling, average length of nanostructures decreases. TC - critical temperature

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5. Fig. 4. Diagram of the morphology of the growth of nanochains on a stepped surface depending on the ratio of diffusion barriers ΔE1 and ΔE2: 1 - chains of finite length are growing; 2 - monomers instead of chains are formed

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