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arXiv 2601.04460cond-mat.mtrl-scicond-mat.str-elcond-mat.supr-con
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利用图表示发现相关电子分子轨道材料

A Structural Map of Potential Correlated Electron Molecular Orbital Materials

Indiana University(印第安纳大学)

Md. Rajbanul Akhond, Alexandru B. Georgescu

AI总结:

本文提出基于图表示的方法,系统发现相关电子分子轨道材料,揭示簇形成规律并提供开放数据集和软件工具,为发现相关量子材料和功能材料提供新路径。

摘要:

相关电子分子轨道(CEMO)材料中的电子态是由过渡金属离子簇上的分子轨道构建的,但历史上发现较为零散,通常被视为孤立案例。本文确立了CEMO材料作为一个系统可发现的类别,并引入基于图的框架来识别、分类和组织无机固体中的过渡金属簇模式。从材料项目中的晶体结构出发,构建过渡金属连接图,利用键切断算法提取簇模式,并确定簇点群、有效簇子格子维数和翻译对称性。在对34548种化合物的高通量筛选中,得到5306种含簇材料,包括2627种稳定或亚稳化合物以及984种具有混合金属簇的材料。所得到的数据集揭示了簇形成中的对称性和元素依赖性趋势。通过将簇分类与平坦带晶格拓扑和电池相关信息相结合,为多个科学界提供了进一步的相关信息。随附的开放数据集、Cluster Finder软件和交互式网页平台使系统探索簇驱动的电子现象成为可能,并为发现具有簇基或扩展金属-金属键的无机固体相关量子材料和功能材料提供了通用路径。

英文摘要:

Correlated electron molecular orbital (CEMO) materials host emergent electronic states built from molecular orbitals localized over clusters of transition metal ions in a solid, yet have historically been discovered sporadically and generally been treated as isolated case studies. Here, we present criteria and tools to classify and analyze these materials, provide a database of identified materials with cluster-specific symmetry analysis, including cluster point groups, effective cluster sublattice dimensionality. Our electronic structure analysis shows that narrow bands in cluster materials can arise either from relatively isolated cluster molecular orbitals or from a mixed mechanism in which cluster localization coexists with frustrated-lattice flat-band topology. We discuss how CEMO properties do not arise from metal clusters in a solid alone: rather they depend on electron count, symmetry, frustration and correlation strength. By integrating cluster classification with flat-band lattice topology and electrochemistry-relevant information, we provide further relevant information to multiple scientific communities. Applying this approach in a high-throughput screen of 34,548 compounds yields potential 2,627 stable or metastable CEMO compounds with isolated cluster motifs. The accompanying open dataset, Cluster Finder software, and interactive web platform enable systematic exploration of cluster-containing electronic solid state materials and establish a starting point for discovering a new class of correlated quantum materials with a wide array of properties.

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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