Dynamics of a chain of interacting magnetic particles in a one-dimensional periodic energy landscape

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Abstract

We explore the dynamics of a one-dimensional chain of paramagnetic colloidal particles in a periodic potential. The model accounts for a constant external force, along with magnetic dipolar attraction and hard-core repulsive interactions between particles. Numerical simulations reveal the emergence of a traveling kink – a chain defect propagating along the chain. We show that the kink emerges beyond a critical force threshold and identify parameter regimes corresponding to distinct dynamic modes such as a pinned kink, a running kink, a cluster kink, and chain drift.

About the authors

M. N Kourov

Perm State University

Perm, Russia

A. E Samoilova

Perm State University; Institute of Continuous Media Mechanics of the Ural Branch of the Russian Academy of Science; Lobachevsky State University of Nizhny Novgorod

Email: amsomeoil@gmail.com
Perm, Russia; Nizhny Novgorod, Russia

A. V Straube

Zuse Institute Berlin

Berlin, Germany

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