Počet záznamů: 1

Modeling of early stages of island growth during pulsed deposition: Role of closed compact islands

  1. 1.
    0367087 - FZU-D 2012 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
    Kotrla, Miroslav - Mašín, Martin
    Modeling of early stages of island growth during pulsed deposition: Role of closed compact islands.
    Non-Equilibrium Statistical Physics Today. New York: American Institute of Physics (AIP), 2011 - (Garrido, P.; Marro, J.; de los Santos, F.), s. 281-281. AIP Conference Proceedings, 1332. ISBN 978-0-7354-0887-6.
    [Granada Seminar on Computational and Statistical Physics /11./. La Herradura, Granada (ES), 13.09.2010-17.09.2010]
    Grant CEP: GA ČR GA202/09/0775
    Výzkumný záměr: CEZ:AV0Z10100520; CEZ:AV0Z10100521
    Klíčová slova: pulsed laser deposition * molecular beam epitaxial growth * Monte Carlo methods * diffusion
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    http://dx.doi.org/ 10.1063/1.3569542

    We study growth of surface islands during the Pulsed Laser Deposition in submonolayer regime using reversible growth model. We study processes accomplishing on different time scales: fast deposition (on scale order of 0.00001 s) during individual pulses, and relaxation of a system between pulses (on scale order of 0.1 s). We observe anomalous temperature dependence of the island density in a certain temperature interval. It is due to the interplay between a cluster decay time and an interval between pulses. The cluster decay time depends on the temperature but also on clusters size and shape. The anomalous behavior is caused by the temperature limited stability of closed—compact clusters. It was revealed first for the simplified model with only nearest—neighbor interaction, and it is elucidated further for interaction up to the second and third neighbors. We analyze role of the closed—compact surface island on kinetics of growth.
    Trvalý link: http://hdl.handle.net/11104/0201869