High-resolution X-ray absorption spectra of the π ∗ resonance of N 2 directly physisorbed on Cu(1 0 0)
Abstract
High-resolution NEXAFS spectra of the π ∗ resonance of N 2 molecules directly physisorbed on a Cu(1 0 0) surface are reported. The vibrational fine structure of this resonance, even for very low coverages, could be resolved, allowing the performance of a vibrational analysis of the experimental spectra. We obtain changes in the vibrational properties of the physisorbed molecules compared to those in the gas~phase. This is due to the direct adsorbate-substrate interaction for N 2 coverages up to 1 ML and to the adsorbate-adsorbate interaction for the multilayer.
- Publication:
-
Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- July 2001
- DOI:
- 10.1016/S0168-9002(01)00759-8
- Bibcode:
- 2001NIMPA.467.1560C