张量超收缩用于自我一致的顶点,通过静态和动态选纠正了GW;对分子和固体的应用具有超交换
Pavel Pokhilko1, Chia-Nan Yeh2, Miguel A Morales2
1Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA.
The Journal of chemical physics
|June 25, 2025
概括
我们开发了高效的算法来计算二次交换 (SOX) 项,改进了分子和固体的自相一致的GW (scGW) 计算. 这提高了预测磁性和尼尔温度的准确性.
科学领域:
- 计算化学的计算化学
- 凝聚物质物理学 凝聚物质物理学
- 量子化学 是一个量子化学.
背景情况:
- 准确预测分子和固体中的电子特性和磁性合是至关重要的.
- 现有的方法在复杂系统的计算成本和准确性方面经常面临局限性.
- 第二阶交换 (SOX) 术语为电子相关性提供了更严格的处理.
研究的目的:
- 在自相一致的GW (scGW) 框架内开发和实施高效的算法来评估SOX术语.
- 调查SOX术语对电子特性,磁交换合和Neel温度的影响.
- 探索由SOX调节的电子相关效应的理论基础.
主要方法:
- 开发MPI-并行算法用于SOX术语评估与各种选类型.
- 将SOX集成到自相一致的GW计算中,形成新的理论方案 (scGWSOX,scGWSOSEX等). ) 的情况.
- 张量超收缩的应用用于计算缩放缩小.
- 破碎对称的方法来研究磁交换合.
- 高温扩展用于尼尔温度评估.
主要成果:
- 成功实现了SOX计算的高效,可扩展的算法,实现了前所未有的大型系统大小.
- 证明了微小的能量差异和SOX对有效磁交换合器的显著影响的可靠评估.
- 量化了超级交换,并通过弱电子相关性解释了其调制.
- 准确预测固体的尼尔温度,与实验数据有很好的一致性.
- 证明了所考虑的理论缺乏F-导出性.
结论:
- 开发的包括SOX的scGW方法在准确描述分子和固体的电子和磁性质方面取得了重大进展.
- SOX术语在理解和量化超交换相互作用及其调制方面发挥着至关重要的作用.
- 计算框架允许对材料属性的可靠预测,包括磁性排序温度.
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