Degawa, M.Stasevich, T. J.Cullen, W. G.Pimpinelli, AlbertoEinstein, Theodore L.Williams, Ellen D.Spurred by recent theoretical predictions (Phys. Rev. E 69, 035102(R) (2004); Surf. Sci. Lett. 598, L355 (2005)), we find experimentally using STM line scans that the fluctuations of the step bounding a facet exhibit scaling properties distinct from those of isolated steps or steps on vicinal surfaces.Article