CORE-LEVEL SPECTROSCOPY OF PHYSISORBED ETHYLENE - SYMMETRY OF ELECTRONIC EXCITATIONS AND MOLECULAR ORIENTATIONS

被引：6

作者：

ARVANITIS, D

SINGH, J

RABUS, H

LEDERER, T

BABERSCHKE, K

机构：

[1] Freie Universität Berlin, Institut für Experimentalphysik, 1000 Berlin 33

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.45.1518

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A truly physisorbed state of C2H4 on Cu(100) is obtained at 20 K which shows all the gas-phase Rydberg lines at very low coverage (0.2 monolayer) in the near-edge x-ray-absorption fine-structure spectra, making it possible to have an unambiguous symmetry assignment of these electronic excitations experimentally. The present assignment differs from previous assignments of the gas-phase data. Clear evidence of two types of adsorbed species of ethylene lying flat on the surface is found, with their pi(*) complexes pointing perpendicular and parallel to the surface.

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页码：1518 / 1521

页数：4

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