Step dynamics and equilibrium structure of monoatomic steps on Si(100)-2x1 - Comment

In contrast to a recent claim by Sanchez and Aldao [Phys. Rev. B 54, R11 058 (1996)] that the relaxation dynamics of attachment processes influences the equilibrium step structure we argue that the step structure in thermodynamic equilibrium is only governed by the configurational free energy regardless of the exact details of the relaxation dynamics.