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arXiv 1908.02707cond-mat.mtrl-sci
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CONQUEST中大规模DFT计算的高精度局部基组

Highly accurate local basis sets for large-scale DFT calculations in CONQUEST

David R. Bowler, Jack S. Baker, Jack T. L. Poulton, Shereif Y. Mujahed, Jianbo Lin, Sushma Yadav, Zamaan Raza, Tsuyoshi Miyazaki

摘要:

由于密度泛函理论(DFT)的广泛应用,对大型系统(超过1,000个原子)建模的能力的需求日益增加。我们提出了一个简短的概述,大规模的DFT代码征服,这是能够模拟这样的大型系统,并讨论的方法来生成一致的,收敛良好的伪原子基组,这将允许这样的大规模计算。我们目前的测试,这些基础设置为各种材料,比较完全收敛的平面波结果使用相同的赝势和网格。

英文摘要:

Given the widespread use of density functional theory (DFT), there is an increasing need for the ability to model large systems (beyond 1,000 atoms). We present a brief overview of the large-scale DFT code Conquest, which is capable of modelling such large systems, and discuss approaches to the generation of consistent, well-converged pseudo-atomic basis sets which will allow such large scale calculations. We present tests of these basis sets for a variety of materials, comparing to fully converged plane wave results using the same pseudopotentials and grids.

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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