强大的瓦尼化,包括磁化和旋转轨道合,通过可投射性解
Yuhao Jiang1,2, Junfeng Qiao3, Nataliya Paulish1
1PSI Center for Scientific Computing, Theory and Data, Villigen PSI, Switzerland.
概括
这项研究增强了用于磁性材料和旋转轨道合的可投射性解的万尼尔函数 (PDWF). 改进的方法在物质属性计算中实现了超过98%的准确性.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 计算化学的计算化学
背景情况:
- 由于其效率和本地化,最大局部化的万尼尔函数 (MLWF) 对材料属性计算至关重要.
- 可投射性解的Wannier函数 (PDWF) 提供了一个自动化的方法来构建占用和未占用频段的MLWF.
研究的目的:
- 将PDWF的适用性扩展到磁性系统和具有自旋轨道合的系统.
- 通过扩展协议,提高PDWF施工的稳定性和可靠性.
- 实现这些扩展在自动化工作流程中,以实现高效的材料属性计算.
主要方法:
- 扩展了PDWF方法,包括磁性系统和旋转轨道合.
- 开发了PDWF建设的自动化工作流程.
- 引入了PDWF投影仪的扩展协议,包括必要时增加原子轨道.
主要成果:
- 在对200种材料的多样化组合中,在准确的Wannier函数插入中取得了超过98%的成功率.
- 证明高精度 (平均带距离<20 meV) 在费米水平或导电带最低值以上高达2 eV.
- 在考虑高于这些能量水平的频段时,显示了100%的成功率.
结论:
- 扩展的PDWF协议可靠地为磁性材料和具有自旋轨道合的磁性材料构建精确的Wannier函数.
- 采用增强的PDWF方法的自动化工作流程显著提高了材料属性计算的效率和准确性.
- 这一进步扩大了万尼尔函数在凝聚物质物理学和材料科学中的应用范围.
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