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arXiv 0811.3082cond-mat.mtrl-sci
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化学与范德华相互作用:杂原子的作用

Chemical versus van der Waals Interaction: The Role of the Heteroatom

N. Atodiresei, V. Caciuc, P. Lazic, S. Blugel

摘要:

我们进行了第一性原理计算,旨在研究的化学和长程范德华(vdW)相互作用的几个π共轭分子在Cu(110)表面上的平面吸附的杂原子,如N的作用。我们的研究表明,在吸附物-衬底界面的分子轨道的排列依赖于杂原子的数量。作为一个直接的结果,分子表面vdW相互作用不仅涉及类π轨道是垂直于分子平面,但也sigma类轨道离域的分子平面。

英文摘要:

We performed first-principles calculations aimed to investigate the role of an heteroatom like N in the chemical and the long-range van der Waals (vdW) interactions for a flat adsorption of several pi-conjugated molecules on the Cu(110) surface. Our study reveals that the alignment of the molecular orbitals at adsorbate-substrate interface depends on the number of heteroatoms. As a direct consequence, the molecule-surface vdW interactions involve not only pi-like orbitals which are perpendicular to the molecular plane but also sigma-like orbitals delocalized in the molecular plane.

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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