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.

The influence of d electrons on surface plasmon dispersion: Pd(110)

ROCCA, MARIO AGOSTINO;
1995

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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/388352
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