Дата и время публикации : 1998-08-12T00:11:06Z
Авторы публикации и институты :
Martin Siegert
Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: RevTeX, 4 pages, 3 figures
Первичная категория: cond-mat.stat-mech
Все категории : cond-mat.stat-mech, cond-mat.mtrl-sci
Краткий обзор статьи: The formation of pyramid-like structures in thin-film growth on substrates with a quadratic symmetry, e.g., {001} surfaces, is shown to exhibit anisotropic scaling as there exist two length scales with different time dependences. Analytical and numerical results indicate that for most realizations coarsening of mounds is described by an exponent n=0.2357. However, depending on material parameters, n may lie between 0 (logarithmic coarsening) and 1/3. In contrast, growth on substrates with triangular symmetries ({111} surfaces) is dominated by a single length scale and an exponent n=1/3.