Mathematics, Ames Laboratory
Journal or Book Title
Physical Review Letters
We quantify the rate of capture by Co islands on Ru(0001) of additionally deposited Cu atoms, using scanning tunneling microscopy. The dependence of the capture rates on Co-island size is shown to reflect larger island-free areas surrounding bigger islands, a feature neglected in mean-field treatments. We also find a strong direction dependence in Cu adatom capture, reflecting the local environment of individual islands. These features are elucidated by simulations and diffusion equation analyses.
American Physical Society
Bartelt, M. C.; Schmid, A. K.; Evans, James W.; and Hwang, R. Q., "Island Size and Environment Dependence of Adatom Capture: CuyCo Islands on Ru(0001)" (1998). Mathematics Publications. 25.