当前位置: X-MOL 学术Phys. Chem. Chem. Phys. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Effect of Hartree–Fock pseudopotentials on local density functional theory calculations†
Physical Chemistry Chemical Physics ( IF 3.3 ) Pub Date : 2018-06-25 00:00:00 , DOI: 10.1039/c8cp00990b
Hengxin Tan 1, 2, 3, 4, 5 , Yuanchang Li 5, 6, 7, 8 , S. B. Zhang 2, 5, 9, 10, 11 , Wenhui Duan 1, 2, 3, 4, 5
Affiliation  

Density functional theory (DFT) can run into serious difficulties with localized states in elements such as transition metals with occupied d states and oxygen. In contrast, including a fraction of the Hartree–Fock exchange can be a better approach for such localized states. Here, we develop Hartree–Fock pseudopotentials to be used alongside DFT for solids. The computational cost is on a par with standard DFT. Calculations for a range of II–VI, III–V and group-IV semiconductors with diverse physical properties show an observably improved band gap for systems containing d-electrons, pointing to a new direction in electronic theory.

中文翻译:

Hartree-Fock伪势对局部密度泛函理论计算的影响

密度泛函理论(DFT)可能会遇到元素(例如具有d态占据的过渡金属和氧)中的局部态的严重困难。相比之下,对于这种局部状态,包括Hartree-Fock交换的一部分可能是更好的方法。在这里,我们开发了Hartree-Fock伪势,与DFT一起用于固体。计算成本与标准DFT相当。对一系列具有不同物理性质的II-VI,III-V和IV组半导体的计算表明,对于包含d电子的系统,带隙具有明显的改善,这为电子理论指明了新的方向。
更新日期:2018-06-25
down
wechat
bug