Supplementary Materials

Density fluctuations as door-opener for diffusion on crowded surfaces

Ann-Kathrin Henß, Sung Sakong, Philipp K. Messer, Joachim Wiechers, Rolf Schuster, Don C. Lamb, Axel Groß, Joost Wintterlin

Materials/Methods, Supplementary Text, Tables, Figures, and/or References

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  • Materials and Methods
  • Supplementary Text
  • Figs. S1 to S3
  • Table S1
  • References

Images, Video, and Other Media

Movie S1
STM movie of single oxygen atoms (bright) in a (√3 x √3)R30° layer of carbon monoxide molecules (dark) on a Ru(0001) surface. The movie was acquired at 300 K with an imaging rate of 10 s-1 (Vt = -0.22 V, It = 10 nA). No filters or drift corrections were applied. Occasional interactions of single oxygen atoms with a second O atom or another foreign atom were systematically excluded from the diffusion analysis.
Movie S2
STM movie of a single oxygen atom (bright) in a (√3 x √3)R30° layer of carbon monoxide (dark) on a Ru(0001) surface. The movie was acquired at 273 K with an imaging rate of 12 s-1 (Vt = -0.70 V, It = 3 nA). No filtering applied. Overlaid in red is the trace of the moving oxygen atom as determined by the particle tracking algorithm. The resulting trace is depicted in Fig. 2 in the main text. A drift correction has been applied to the STM movie and the particle trace.