arXiv:2507.17726cond-mat.dis-nncond-mat.mtrl-sci2025-07被引 1

用AI从显微图像生成磁性自旋冰,自动识别复杂磁阻挫结构。

Deep Generative Learning of Magnetic Frustration in Artificial Spin Ice from Magnetic Force Microscopy Images

  • 用变分自编码器从磁力显微镜图像生成合成数据并提取特征
  • 准确预测自旋冰中自旋方向与净磁矩,识别阻挫顶点
  • 可指导设计可控阻挫模式的新型磁性材料,适合纳米磁学研究者

随着高分辨率微观图像数据集规模不断增大,机器学习方法被用于识别和分析图像中隐含的细微物理现象。本文以蜂窝晶格人工自旋冰样品的显微图像为数据源,自动化计算自旋冰构型中的净磁矩和方向。第一阶段利用变分自编码器(VAEs)这一新兴无监督深度学习技术,训练模型精准预测自旋结构中的磁矩与方向,并生成高质量的合成磁力显微镜(MFM)图像,有效降低实验与分割误差。第二阶段实现对阻挫顶点和纳米磁性片段的精确识别与预测,建立起微观图像结构与功能之间的关联。该方法支持设计具有可控阻挫模式的优化自旋冰构型,为按需合成提供可能。

原文摘要 · Abstract (English)

Increasingly large datasets of microscopic images with atomic resolution facilitate the development of machine learning methods to identify and analyze subtle physical phenomena embedded within the images. In this work, microscopic images of honeycomb lattice spin-ice samples serve as datasets from which we automate the calculation of net magnetic moments and directional orientations of spin-ice configurations. In the first stage of our workflow, machine learning models are trained to accurately predict magnetic moments and directions within spin-ice structures. Variational Autoencoders (VAEs), an emergent unsupervised deep learning technique, are employed to generate high-quality synthetic magnetic force microscopy (MFM) images and extract latent feature representations, thereby reducing experimental and segmentation errors. The second stage of proposed methodology enables precise identification and prediction of frustrated vertices and nanomagnetic segments, effectively correlating structural and functional aspects of microscopic images. This facilitates the design of optimized spin-ice configurations with controlled frustration patterns, enabling potential on-demand synthesis.

自旋冰生成模型磁性材料深度学习

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