Two-Dimensional Nucleation with Edge and Corner Diffusion
| dc.creator | Saito, Yukio | |
| dc.date | 2003-01-08 | |
| dc.date | 2003-06-20 | |
| dc.date.accessioned | 2026-07-07T08:19:15Z | |
| dc.date.available | 2026-07-07T08:19:15Z | |
| dc.description | The effect of edge and corner diffusions on the morphology and on the density of islands nucleated irreversibly on a flat substrate surface is studied. Without edge and corner diffusion, islands are fractal. As an edge diffusion constant $D_e$ increases, islands tend to take a cross shape with four needles in the $< 10 >$ direction. Additional corner diffusion with a diffusion constant $D_c$ yields square islands. When $D_e$ is small relative to the surface diffusion constant $D_s$, the square corner shows the Berg instability to produce hopper growth in the $<11>$ direction. The corner diffusion influences the island number density $n$. At a deposition flux $F$ with a small $D_c$, mainly monomers are mobile and $n \propto (F/D_s)^{1/3}$. At large $D_c$, dimers and trimers are also mobile and $n \propto F^{3/7} D_s^{-5/21} D_c^{-4/21}$. The $F$ dependence is in good agreement to the rate equation analysis, but the dependence on $D_c$ cannot be explained by the theory. | |
| dc.description | 8 pages, 7 figures, Change content with additional references and figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0301091 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0301091 | |
| dc.identifier | J. Phys. Soc. Jpn. 72 (2003) 2008-2014. | |
| dc.identifier | doi:10.1143/JPSJ.72.2008 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/134703 | |
| dc.subject | Materials Science | |
| dc.subject | Statistical Mechanics | |
| dc.title | Two-Dimensional Nucleation with Edge and Corner Diffusion | |
| dc.type | text |