外延蒽薄膜中的结构相关能带色散。

Structure-dependent band dispersion in epitaxial anthracene films.

机构信息

School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1, Asahidai, Nomi, Ishikawa 923-1292, Japan.

出版信息

J Chem Phys. 2011 Sep 28;135(12):124709. doi: 10.1063/1.3643717.

DOI:10.1063/1.3643717

PMID:21974554

Abstract

The intermolecular band dispersion related to the highest occupied molecular orbital of epitaxial anthracene multilayer films on single-crystalline Bi(0001) has been measured using angle-resolved ultraviolet photoelectron spectroscopy. By comparing the dispersion to that of anthracene multilayers on Cu(110) [F. Bussolotti, Y. Yamada-Takamura, and R. Friedlein, Phys. Rev. B 80, 153402 (2009)], it is shown how the transfer integrals and the difference in on-site energies depend on lattice parameters and how this, in turn, affects the band curvature along high-symmetry directions.

摘要

采用角分辨紫外光电子能谱，测量了外延蒽多层膜在单晶 Bi(0001)表面上的最高占据分子轨道的分子间能带色散。通过将色散与蒽在 Cu(110)表面上的多层膜进行比较[F. Bussolotti、Y. Yamada-Takamura 和 R. Friedlein，Phys. Rev. B 80, 153402(2009)]，可以展示转移积分和局域能差如何取决于晶格参数，以及这反过来如何影响沿高对称方向的能带曲率。