%0 Journal Article
%T Depinning of an anisotropic interface in random media: The tilt effect
%A K. -I. Goh
%A H. Jeong
%A B. Kahng
%A D. Kim
%J Physics
%D 2000
%I arXiv
%R 10.1103/PhysRevE.62.2955
%X We study the tilt dependence of the pinning-depinning transition for an interface described by the anisotropic quenched Kardar-Parisi-Zhang equation in 2+1 dimensions, where the two signs of the nonlinear terms are different from each other. When the substrate is tilted by m along the positive sign direction, the critical force F_c(m) depends on m as F_c(m)-F_c(0) \sim -|m|^{1.9(1)}. The interface velocity v near the critical force follows the scaling form v \sim |f|^{\theta}\Psi_{\pm}(m^2 /|f|^{\theta+\phi}) with \theta = 0.9(1) and \phi= 0.2(1), where f \equiv F-F_c(0) and F is the driving force.
%U http://arxiv.org/abs/cond-mat/0008225v1