UNIVERSAL MACROSCOPIC BACKGROUND FORMATION IN SURFACE SUPERROUGHENING

We study a class of super-rough growth models whose structure :Factor satisfies the Family-Vicsek scaling. We demonstrate that a macroscopic background spontaneously develops in the local surface profile, which dominates the scaling of the local surface width and the height diffe rence. The shape of the macroscopic background takes a form of a finit e-order polynomial whose order is decided from the value of the global roughness exponent. Once the macroscopic background is subtracted, th e width of the resulting local surface profile satisfies the Family-Vi csek scaling. We show that this feature is universal to all super-roug h growth models, and we also discuss the difference between the macros copic background formation and the pattern formation in other models.