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arXiv 1004.2625cond-mat.stat-mechcond-mat.mtrl-sci
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有限二维正方形自旋冰的顶点动力学

Vertex dynamics in finite two dimensional square spin ices

Zoe Budrikis, Paolo Politi, R. L. Stamps

摘要:

本文从几何阻挫如何控制动力学和达到稳态的途径的角度讨论了人工自旋冰中的局域磁有序。我们讨论了使用基于顶点位形的粒子图像来解释磁位形的时间演化的可能性。可能的顶点过程的分析,使我们能够预期不同的行为为开放和封闭的边缘和存在不同的领域制度。数值模拟证实了这些结果,也证明了相关性和长程相互作用的重要性,在理解粒子种群演化。我们还表明,平均场模型的顶点动力学有限尺寸效应的重要见解。

英文摘要:

Local magnetic ordering in artificial spin ices is discussed from the point of view of how geometrical frustration controls dynamics and the approach to steady state. We discuss the possibility of using a particle picture based on vertex configurations to interpret time evolution of magnetic configurations. Analysis of possible vertex processes allows us to anticipate different behaviors for open and closed edges and the existence of different field regimes. Numerical simulations confirm these results and also demonstrate the importance of correlations and long range interactions in understanding particle population evolution. We also show that a mean field model of vertex dynamics gives important insights into finite size effects.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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