[2P16] A method for the estimation of the step-step attractive energy from experiments
Faceted macrosteps formed at equilibrium are considered to be caused by step-step attraction. However, the explicit value of the step-step attractive energy has not yet been obtained. This is because macrostep formation at equilibrium is one of the difficult problems arising from the surface roughness associated with the crystal morphology. Using the phase diagram that we calculated with high accuracy, we show how to estimate the step-step attractive energy. As an example, the method is applied to the Si(113)+(114) surface. The step-step attractive energy is then estimated to be approximately -123meV.
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