Variational Physics-Informed Reconstruction of Topological Magnetic Textures

Session Information

Location: AMCS | "Gheorghe Asachi" Technical University of Iași (TUIAȘI)
Day: 1. Monday 15th
Time: 15:30-16:30
Chairperson: Roger Moser

Presentation Details

Presentation Type: Oral presentation
Title: Variational Physics-Informed Reconstruction of Topological Magnetic Textures
Abstract: Reconstructing three-dimensional magnetization textures from experimental data, such as NV magnetometry or X-ray tomography, constitutes a fundamentally ill-posed inverse problem. The non-uniqueness of stray-field sources, combined with experimental noise and resolution limits, requires the incorporation of physical constraints beyond purely mathematical inversion. In this work, we present a physics-informed variational reconstruction framework designed to enforce consistency with micromagnetic equilibrium.

The method embeds the full micromagnetic energy functional directly into the inverse problem, utilizing an auto-differentiable finite-difference solver. By combining FFT-based computations with gradient-based optimization, the framework enables the efficient extraction of physically consistent magnetization textures. This approach addresses the inherent ambiguities of inverse problems in magnetic imaging, providing a robust and quantitative route to characterizing complex topological configurations.

Presenter

Dr Claas Abert
University of Vienna | Austria

Authors

1. Abert, Claas | University of Vienna