title: Self-organized criticality in an interface-growth model with quenched randomness.
abstract: We study a modified model of the Kardar-Paris-Zhang equation with quenched disorder, in which the driving force decreases as the interface rises up. A critical state is self-organized, and the anomalous scaling law with roughness exponent α∼0.63 is numerically obtained.
authors.affiliation: Department of Applied Science for Electronics and Materials, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan.
authors.forename: Hidetsugu
authors.initials: H
authors.lastname: Sakaguchi
mesh_terms: D008962:Models, Theoretical; D055585:Physical Phenomena; D013269:Stochastic Processes; D013997:Time Factors