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arXiv 1004.2974cond-mat.mtrl-sci
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高通量电子能带结构计算:挑战和工具

High-throughput electronic band structure calculations: challenges and tools

Wahyu Setyawan, Stefano Curtarolo

摘要:

这篇文章致力于讨论能带结构计算的高通量方法。我们提出了科学和计算的挑战,以及解决方案依赖于开发的框架(自动流,AFLOW/ACONVASP)。该方法的关键因素是程序的标准化和耐用性。有两种情况是相关的:1)独立用户在他们自己的计算系统中生成数据库(离线方法)和2)基于共同基础共享计算信息的团队用户(在线方法)。这两种情况都集成在框架中:对于离线方法,标准化是自动的,完全集成的14布拉维晶格,原始和传统的单位细胞,和坐标的高对称k-路径的布里渊区。对于在线任务,该框架提供了一个可扩展的Web界面,用户可以按照建议的标准准备和设置计算。包括了几个能带结构的例子。还提供了Nd、Sm和Eu的LSDA+U参数(U,J)。

英文摘要:

The article is devoted to the discussion of the high-throughput approach to band structures calculations. We present scientific and computational challenges as well as solutions relying on the developed framework (Automatic Flow, AFLOW/ACONVASP). The key factors of the method are the standardization and the robustness of the procedures. Two scenarios are relevant: 1) independent users generating databases in their own computational systems (off-line approach) and 2) teamed users sharing computational information based on a common ground (on-line approach). Both cases are integrated in the framework: for off-line approaches, the standardization is automatic and fully integrated for the 14 Bravais lattices, the primitive and conventional unit cells, and the coordinates of the high symmetry k-path in the Brillouin zones. For on-line tasks, the framework offers an expandable web interface where the user can prepare and set up calculations following the proposed standard. Few examples of band structures are included. LSDA+U parameters (U, J) are also presented for Nd, Sm, and Eu.

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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