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arXiv 0801.0733cond-mat.mtrl-sci
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酞菁铜电子结构的比较密度泛函理论研究

Electronic Structure of Copper Phthalocyanine: a Comparative Density Functional Theory Study

Noa Marom, Oded Hod, Gustavo E. Scuseria, Leeor Kronik

摘要:

本文采用密度泛函理论,利用几种不同的半局域和杂化泛函,对酞菁铜(CuPc)的电子结构进行了系统的研究,并将计算结果与实验结果进行了比较.我们发现,半本地功能失败定性为酞菁铜,主要是因为本地化轨道由于自相互作用的错误下绑定。我们讨论了一个适当的选择功能的研究铜酞菁/金属界面,并建议海德-Scuseria-Ernzerhof筛选的混合功能作为一个合适的妥协功能。

英文摘要:

We present a systematic density functional theory study of the electronic structure of copper phthalocyanine (CuPc), using several different (semi)-local and hybrid functionals, and compare the results to experimental photoemission data. We show that semi-local functionals fail qualitatively for CuPc, primarily because of under-binding of localized orbitals due to self-interaction errors. We discuss an appropriate choice of functional for studies of CuPc/metal interfaces and suggest the Heyd-Scuseria-Ernzerhof screened hybrid functional as a suitable compromise functional.

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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