Magnetization Reversal in Spin Patterns with Complex Geometry

2004/11/09 by Bosiljka Tadić, B. Tadic, Krzysztof Malarz +3 · 2 citations
Physics and Astronomy · #Magnetic properties of thin films #Quantum many-body systems #Theoretical and Computational Physics #cond-mat.stat-mech

paper · pdf · doi:10.1103/physrevlett.94.137204

published as Phys. Rev. Lett. 94 (2005) 137204 · 4 pages, 3 color figures, revtex4

arxiv created 2004/11/09 · openalex publication_date 2005/04/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study field-driven dynamics of spins with antiferromagnetic interactions along the links of a complex substrate geometry, which is modeled by graphs of a controlled connectivity distribution. The magnetization reversal occurs in avalanches of spin flips, which are pinned by the topological constraints of the underlying graph. The hysteresis loop and avalanche sizes are analyzed and classified in terms of the graph's connectivity and clustering. The results are relevant for magnets with a hierarchical spatial inhomogeneity and for design of nanoscale magnetic devices.

Citations

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