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首页> 外文期刊>Physical review >Correlation effects in the total energy, the bulk modulus, and the lattice constant of a transition metal: Combined local-density approximation and dynamical mean-field theory applied to Ni and Mn
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Correlation effects in the total energy, the bulk modulus, and the lattice constant of a transition metal: Combined local-density approximation and dynamical mean-field theory applied to Ni and Mn

机译:过渡金属的总能量,体积模量和晶格常数的相关效应:结合局部密度近似和动态平均场理论应用于镍和锰

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摘要

We present an accurate implementation of total-energy calculations into the local-density approximation plus dynamical mean-field theory (LDA+DMFT) method. The electronic structure problem is solved through the full-potential linear muffin-tin orbital and Korringa-Kohn-Rostoker methods with a perturbative solver for the effective impurity suitable for moderately correlated systems. We have tested the method in detail for the case of Ni, and investigated the sensitivity of the results to the computational scheme and to the complete self-consistency. It is demonstrated that the LDA+DMFT method can resolve a long-standing controversy between the LDA/generalized gradient approximation density-functional approach and experiment for equilibrium lattice constant and bulk modulus of Mn.
机译:我们提出了将总能量计算准确实现为局部密度近似加动态平均场论(LDA + DMFT)方法的方法。电子结构问题是通过全势线性松饼-锡轨道和Korringa-Kohn-Rostoker方法以及适用于中度相关系统的有效杂质的扰动求解器解决的。我们已经针对镍的情况详细测试了该方法,并研究了结果对计算方案和完全自洽的敏感性。结果表明,LDA + DMFT方法可以解决LDA /广义梯度逼近密度泛函方法与Mn平衡晶格常数和体积模量实验之间的长期争论。

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  • 来源
    《Physical review》 |2009年第11期|198-211|共14页
  • 作者单位

    Institute for Molecules and Materials, Radboud University of Nijmegen, NL-6525 ED Nijmegen, The Netherlands;

    Department Chemie und Biochemie, Physikalische Chemie, Ludwig-Maximilians Universitaet Muenchen, D-81377 Muenchen, Germany;

    Department Chemie und Biochemie, Physikalische Chemie, Ludwig-Maximilians Universitaet Muenchen, D-81377 Muenchen, Germany Institut fuer Anorganische und Analytische Chemie, Johannes-Gutenberg Universitaet Mainz, 55128 Mainz, Germany;

    Institute for Molecules and Materials, Radboud University of Nijmegen, NL-6525 ED Nijmegen, The Netherlands;

    Department Chemie und Biochemie, Physikalische Chemie, Ludwig-Maximilians Universitaet Muenchen, D-81377 Muenchen, Germany;

    Institute of Theoretical Physics, University of Hamburg, 20355 Hamburg, Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    total energy and cohesive energy calculations; transition metals and alloys; strongly correlated electron systems; heavy fermions;

    机译:总能量和内聚能计算;过渡金属和合金;强相关电子系统;重费米子;

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