Dynamical Transitions of a Driven Ising Interface

Details Dynamical Transitions of a Driven Ising Interface Dynamical Transitions of a Driven Ising Interface

2007-11-06

arxiv.org/abs/0711.0831v1

Physics

Condensed Matter

Statistical Mechanics

4 pages 3 .eps figures

Scientific paper

10.1103/PhysRevE.77.032601

We study the structure of an interface in a three dimensional Ising system created by an external non-uniform field $H({\bf r},t)$. $H$ changes sign over a two dimensional plane of arbitrary orientation. When the field is pulled with velocity ${\bf v}_e$, (i.e. $H({\bf r},t) = H({\bf r - v_e}t)$), the interface undergoes a several dynamical transitions. For low velocities it is pinned by the field profile and moves along with it, the distribution of local slopes undergoing a series of commensurate-incommensurate transitions. For large ${\bf v}_e$ the interface de-pinns and grows with KPZ exponents.

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