Domain wall roughening in three dimensional magnets at the depinning transition

TL;DR

This paper investigates the roughening behavior of domain walls in three-dimensional magnets at the depinning transition using numerical simulations, focusing on the interface morphology near criticality.

Contribution

It provides new numerical estimates of critical exponents describing interface roughening in 3D magnetic systems at depinning.

Findings

Critical exponents for interface roughness are determined.

The morphology of the interface exhibits universal scaling behavior.

Results enhance understanding of depinning phenomena in magnetic materials.

Abstract

The kinetic roughening of a driven interface between three dimensional spin-up and spin-down domains in a model with non-conserved scalar order parameter and quenched disorder is studied numerically within a discrete time dynamics at zero temperature. The exponents characterizing the morphology of the interface are obtained close to the depinning-transition