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arXiv 1503.00097cond-mat.mtrl-sci
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基于系统可改进原子基的大规模从头算模拟

Large-scale ab initio simulations based on systematically improvable atomic basis

Pengfei Li, Xiaohui Liu, Mohan Chen, Peize Lin, Xinguo Ren, Lin Lin, Chao Yang, Lixin He

摘要:

我们提出了一个第一性原理计算机程序包(ABACUS),是基于密度泛函理论和数值原子基组。描述了代码中使用的理论基础和数值技术,重点关注使用Chen,Guo和He [J. Phys.:康登斯Matter \textbf{22},445501(2010)]。基准测试结果,提出了各种系统,包括分子,固体,表面和缺陷。所有结果表明,ABACUS软件包及其相关的原子基组是一个有效的和可靠的工具,模拟小规模和大规模的材料。

英文摘要:

We present a first-principles computer code package (ABACUS) that is based on density functional theory and numerical atomic basis sets. Theoretical foundations and numerical techniques used in the code are described, with focus on the accuracy and transferability of the hierarchical atomic basis sets as generated using a scheme proposed by Chen, Guo and He [J. Phys.:Condens. Matter \textbf{22}, 445501 (2010)]. Benchmark results are presented for a variety of systems include molecules, solids, surfaces, and defects. All results show that the ABACUS package with its associated atomic basis sets is an efficient and reliable tool for simulating both small and large-scale materials.

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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