Quantum delocalization of H on Pd(110): A vibrational study
Abstract
The vibrational spectra of H on Pd(110) at 90 K have been measured in the low-H-coverage region, by using high-resolution electron-energy-loss spectroscopy. Three dipole-active loss peaks associated with H adatoms were observed at 87-89, 96-100, and 121-122 meV. A model calculation based on the delocalization of H was made, which gives the energy positions and relative intensity variation of the two loss peaks in the range of 87-100 meV for different H coverages. There is a reasonable agreement between the calculated and experimental results. It is concluded that vibrationally excited H atoms on Pd(110) are described by the delocalized model.
- Publication:
-
Physical Review B
- Pub Date:
- May 1996
- DOI:
- 10.1103/PhysRevB.53.13767
- Bibcode:
- 1996PhRvB..5313767T
- Keywords:
-
- 68.35.Ja;
- 68.45.Da;
- 68.35.Bs;
- 82.65.My;
- Surface and interface dynamics and vibrations;
- Structure of clean surfaces