Collective and single-particle excitations in the photoyield spectrum of Al

Barman S.R.; Horn, K; Haberle, P.


Using angle- and energy-resolved photoyield spectroscopy, we investigate the properties of the multipole plasmon excitation. At higher energies, a systematic dependence of the photoyield on the photon angle of incidence is observed and explained on the basis of classical Fresnel theory, indicating the possibility of obtaining information about optical constants from such measurements. A feature above the multipole plasmon is assigned to the excitation of a bulk plasmon by the photon field.

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Título de la Revista: PHYSICAL REVIEW B
Volumen: 58
Número: 8
Editorial: American Physical Society
Fecha de publicación: 1998