title: Evidence for power-law dominated noise in vacuum deposited CaF2.
abstract: We have studied the surface roughness of CaF2 vacuum deposited on glass using atomic force microscopy for film coverages spanning an order of magnitude. We find the roughness exponent alpha=0.88+/-0.03, the growth exponent beta=0.75+/-0.03, and the dynamic exponent z=alpha/beta=1.17+/-0.06. Multifractality is also present, along with power-law behavior in the nearest neighbor height difference probability distribution. The results indicate noise dominated by a power-law distribution with exponent micro+1 approximately 4.6.
authors.affiliation: Laboratory of Low Temperature Physics, Department of Physics, University of Massachusetts, Amherst, MA 01003, USA.
authors.forename: D R
authors.initials: DR
authors.lastname: Luhman
authors.forename: R B
authors.initials: RB
authors.lastname: Hallock