2025-09-22 マサチューセッツ工科大学（MIT）
＜関連情報＞
- https://news.mit.edu/2025/new-tool-makes-generative-ai-models-likely-create-breakthrough-materials-0922
- https://www.nature.com/articles/s41563-025-02355-y
量子材料発見のための生成モデルにおける構造的制約の統合 Structural constraint integration in a generative model for the discovery of quantum materials
Ryotaro Okabe,Mouyang Cheng,Abhijatmedhi Chotrattanapituk,Manasi Mandal,Kiran Mak,Denisse Córdova Carrizales,Nguyen Tuan Hung,Xiang Fu,Bowen Han,Yao Wang,Weiwei Xie,Robert J. Cava,Tommi S. Jaakkola,Yongqiang Cheng & Mingda Li
Nature Materials Published:22 September 2025
DOI:https://doi.org/10.1038/s41563-025-02355-y
Abstract
Billions of organic molecules have been computationally generated, yet functional inorganic materials remain scarce due to limited data and structural complexity. Here we introduce Structural Constraint Integration in a GENerative model (SCIGEN), a framework that enforces geometric constraints, such as honeycomb and kagome lattices, within diffusion-based generative models to discover stable quantum materials candidates. SCIGEN enables conditional sampling from the original distribution, preserving output validity while guiding structural motifs. This approach generates ten million inorganic compounds with Archimedean and Lieb lattices, over 10% of which pass multistage stability screening. High-throughput density functional theory calculations on 26,000 candidates shows over 95% convergence and 53% structural stability. A graph neural network classifier detects magnetic ordering in 41% of relaxed structures. Furthermore, we synthesize and characterize two predicted materials, TiPd0.22Bi0.88 and Ti0.5Pd1.5Sb, which display paramagnetic and diamagnetic behaviour, respectively. Our results indicate that SCIGEN provides a scalable path for generating quantum materials guided by lattice geometry.
