Surface plasmon dispersion on Pd[110] was investigated along the high-symmetry directions [1(1)over bar $>0] and [001] with angle-resolved electron-energy-loss spectroscopy. A large negative initial dispersion with transferred momentum is found in spite of the strong shift of plasmon and surface plasmon frequencies induced by the presence of the d bands. Their unfilled character in transition metals is thus demonstrated to affect the dispersion of the surface plasmon in a very different way than for noble metals, where the filled d bands are responsible for the positive initial dispersion.
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Titolo: | The influence of d electrons on surface plasmon dispersion: Pd(110) |
Autori: | |
Data di pubblicazione: | 1995 |
Rivista: | |
Abstract: | Surface plasmon dispersion on Pd[110] was investigated along the high-symmetry directions [1(1)over bar $>0] and [001] with angle-resolved electron-energy-loss spectroscopy. A large negative initial dispersion with transferred momentum is found in spite of the strong shift of plasmon and surface plasmon frequencies induced by the presence of the d bands. Their unfilled character in transition metals is thus demonstrated to affect the dispersion of the surface plasmon in a very different way than for noble metals, where the filled d bands are responsible for the positive initial dispersion. |
Handle: | http://hdl.handle.net/11567/388352 |
Appare nelle tipologie: | 01.01 - Articolo su rivista |