Erratum: Quantitative description of ${\mathrm{C}}_{60}$ diffusion on an insulating surface [Phys. Rev. B 82, 155428 (2010)]

Figure 4

Upon decreasing substrate temperature $T_S$, the island density $\widehat{N}$ increases and is assumed to follow Eq. (1). The slope reveals the diffusion barrier to $E_d=(214\pm 16)\mathrm{meV}$.