Speaker
Description
Grain boundaries and domain walls govern connectivity, pinning, and dissipation in unconventional superconductors, yet their internal 3D strain fields are difficult to quantify non-destructively. We combine Bragg Coherent Diffraction Imaging (BCDI) with a physics-informed Vision Transformer using Fourier-aware attention to achieve robust phase retrieval in the multidomain regime. The model enforces a real-space support and minimises a physics-informed loss, yielding sharp domain wall reconstructions and strain maps (via phase gradients) with fewer artefacts than iterative method. Whereas prior BCDI studies typically resolve 5-7 domains, our approach reconstructs up to 19 domains unsupervised. This will enable interface-resolved 3D strain for engineering superconducting and magnetic order.
| Session Selection | Condensed Matter |
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