Kris's Research Notes

October 14, 2011

Morphology dependence on flux and temperature

Filed under: GaAs Simulations — Kris Reyes @ 1:38 pm

In this note, we consider the effect of As flux and substrate temperature on the resulting surface morphology after recrystallizing liquid Ga droplets. We see that lower As flux and higher temperature result in more diffuse structures such as nanorings.

In these simulations, we vary As flux $R_{As} \in \left\{0.05, 0.1, 0.2, 0.3, 0.4, 0.5\right\}$ monolayers/second and temperature $T \in \left\{150, 250, 350\right\} ^\circ$C. We followed the experimental procedure outlined in this post, but only deposited 2.5 monolayers of Ga. Here is table of the resulting structures obtained by varying flux and temperature:

N.B. The third column is scaled differently from the first two.