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Electronic structure and orientation of tetracene on Cu(100)

Authors
Journal
Surface Science
0039-6028
Publisher
Elsevier
Publication Date
Volume
192
Identifiers
DOI: 10.1016/s0039-6028(87)81125-1

Abstract

Angular resolved photoemission spectroscopy using synchrotron radiation (10 eV≤ hv≤45 eV) yields a detailed picture of the electronic structure of the valence bands and information concerning the orientation of thin films of tetracene adsorbed at room temperature on Cu(100) substrates. With LEED a well ordered 2×2 overlayer is observed. Dipole selection rules based on the molecular symmetry have been used in order to analyze the angular-dependence of the observed photoemission bands. We find a perpendicular orientation of the tetracene molecular plane with respect to the Cu(100) substrate and arrive at a detailed assignment of all valence band features in good agreement with MO calculations.

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