Figure 1

Behavior near bifurcation points for (a),(b) high-$\theta$ and (c),(d) low-$\theta$ bifurcations. (a) Amplification rate versus misorientation for high-$\theta$ bifurcation. Inset: Pattern amplitude (reckoned as rms surface roughness) versus time. Squares: $65°$; ×: $60°$; +: $55°$; circles: $50°$. (b) Wavelength versus misorientation for high-$\theta$ bifurcation. (c) Amplification rate versus misorientation for low-$\theta$ bifurcation. (d) Amplification rate versus $E$ at $\theta =10°$. In (a)–(c), $E=250\mathrm{eV}$.Reuse & Permissions