| title | The AI Theorist reveals excitonic structure in α-RuCl_3 |
|---|---|
| authors | Hongjian Zhou, Xianfan Nie, Sean Wu, Tarun Patel, Jinge Wu, Andrew Liu, Adam Wei Tsen, David A. Clifton |
| date | 2026-10-01 |
| venue | arXiv (preprint, not peer reviewed) |
| id | arXiv:2610.02417 |
| affiliation | University of Oxford |
| upvotes | 2 (Hugging Face Daily Papers, 2026-11-01) |
| links | abs pdf hf |
| abstract | Advances in experimental instrumentation and automation generate increasingly rich datasets, but turning experimental observations into microscopic understanding remains a bottleneck in scientific discovery. To accelerate this process, we introduce AI Theorist, a system of artificial intelligence (AI) agents for autonomous discovery of physical models through hypothesis generation, first-principles calculations and evidence-driven refinement. We apply the framework to α-RuCl_3, a leading candidate material for realizing a Kitaev quantum spin liquid, to investigate its electronic structure through optical spectra. AI Theorist develops a new interpretation of the optical and photocurrent observations, identifying distinct excitonic states with contrasting optical selection rules and real-space distributions. To our knowledge, this is the first demonstration of an AI system autonomously developing a physical model to explain previously unpublished experimental observations in a quantum material, utilizing first-principles electronic-structure and many-body calculations. Our results establish a route to autonomous theoretical discovery in materials science, in which AI agents use first-principles calculations to turn experimental observations into physical models and testable predictions. |
cite
@misc{zhou2026ai,
title={The AI Theorist reveals excitonic structure in α-RuCl_3},
author={Hongjian Zhou and Xianfan Nie and Sean Wu and Tarun Patel and Jinge Wu and Andrew Liu and Adam Wei Tsen and David A. Clifton},
year={2026},
eprint={2610.02417},
archivePrefix={arXiv},
url={https://arxiv.org/abs/2610.02417}
}