Superroughening versus intrinsic anomalous scaling of surfaces
Superroughening versus intrinsic anomalous scaling of surfaces
We study kinetically rough surfaces which display anomalous scaling in local properties such as the roughness or the height-difference correlation function. By studying the power spectrum of the surface and its relation to the height-difference correlation, we distinguish two independent causes for anomalous scaling. One is superroughening (global roughness exponent …