首页> 美国卫生研究院文献>Molecules >Extent of Spin Contamination Errors in DFT/Plane-wave Calculation of Surfaces: A Case of Au Atom Aggregation on a MgO Surface
【2h】

Extent of Spin Contamination Errors in DFT/Plane-wave Calculation of Surfaces: A Case of Au Atom Aggregation on a MgO Surface

机译:表面DFT /平面波计算中自旋污染误差的程度:MgO表面金原子聚集的情况

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

The aggregation of Au atoms onto a Au dimer (Au2) on a MgO (001) surface was calculated by restricted (spin-un-polarized) and unrestricted (spin-polarized) density functional theory calculations with a plane-wave basis and the approximate spin projection (AP) method. The unrestricted calculations included spin contamination errors of 0.0–0.1 eV, and the errors were removed using the AP method. The potential energy curves for the aggregation reaction estimated by the restricted and unrestricted calculations were different owing to the estimation of the open-shell structure by the unrestricted calculations. These results show the importance of the open-shell structure and correction of the spin contamination error for the calculation of small-cluster-aggregations and molecule dimerization on surfaces.
机译:通过在平面波的基础上进行受限(自旋非极化)和非受限(自旋极化)密度泛函理论计算,计算出MgO(001)表面上Au原子在Au二聚体(Au2)上的聚集。自旋投影(AP)方法。不受限制的计算包括0.0–0.1 eV的自旋污染误差,并且使用AP方法消除了该误差。由于不受限制的计算对开壳结构的估计,通过限制和不受限制的计算估计的聚集反应的势能曲线是不同的。这些结果表明,对于计算小团聚体和表面上的分子二聚化,开壳结构和自旋污染误差校正的重要性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号