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Step fluctuations on a multi-component surface of Al/Si(111)-(√3x√3) were studied using variable-temperature STM at temperatures 770-1020 K. The reduced step diffusivity, b 2 /a, has been found to vary from 0.45 Å at 770 K up to 1.00 Å at 1020 K. Its temperature dependence follows the expected exponential law, from which the effective energy of kink formation has been determined to be 0.214...
We have applied atomic force microscopy for the study in solution of time evolution of step roughness on the crystal faces with high (pottasium dihydrophosphate: KDP) and low (lysozyme) density of kinks. It was found that the roughness increases with time revealing the time dependence as t 1/4 . Step velocity does not depend upon distance between steps, that is why the experimental...
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