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arXiv 2602.19153cond-mat.mtrl-scics.AIcs.LG
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具有点缺陷的无机固体加速结构弛豫的约束扩散

Constrained Diffusion for Accelerated Structure Relaxation of Inorganic Solids with Point Defects

University of Virginia(弗吉尼亚大学)

Jingyi Cui, Jacob K. Christopher, Ankita Biswas, Prasanna V. Balachandran, Ferdinando Fioretto

AI总结:

本文提出了一种约束扩散模型,用于高效模拟具有点缺陷的无机固体结构弛豫,提升第一性原理模拟的效率和准确性。

摘要:

点缺陷通过改变电子态和修改局部键合环境来影响材料性能。然而,由于大模拟单元和复杂的能景观,高通量第一性原理模拟点缺陷成本高昂。为此,我们提出了一种用于模拟点缺陷的生成框架,克服了传统第一性原理模拟器的局限性。通过利用对偶算法,我们引入了一种具有约束意识的扩散模型,在该领域优于现有受限扩散方法。在Bi2Te3的六种缺陷配置设置中,所提出的方法在生成物理上合理的结构方面提供了最先进的性能。

英文摘要:

Point defects affect material properties by altering electronic states and modifying local bonding environments. However, high-throughput first-principles simulations of point defects are costly due to large simulation cells and complex energy landscapes. To this end, we propose a generative framework for simulating point defects, overcoming the limits of costly first-principles simulators. By leveraging a primal-dual algorithm, we introduce a constraint-aware diffusion model which outperforms existing constrained diffusion approaches in this domain. Across six defect configuration settings for Bi2Te3, the proposed approach provides state-of-the-art performance generating physically grounded structures.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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