Probing unoccupied bulk bands via the cross section of quantum well states in thin films

Autor:	José Ortega, F. J. Himpsel, Enrique G. Michel, K. N. Altmann, Aitor Mugarza, Arantzazu Mascaraque
Rok vydání:	2001
Předmět:	Condensed matter physics Low-energy electron diffraction Chemistry Surfaces and Interfaces Photon energy Condensed Matter Physics Molecular physics Surfaces Coatings and Films Cross section (physics) Materials Chemistry Perpendicular Wave vector Thin film Maxima Quantum well
Zdroj:	Surface Science. :464-469
ISSN:	0039-6028
DOI:	10.1016/s0039-6028(01)00713-0
Popis:	The photoemission cross section of quantum well states in thin Cu(1 0 0) films on Co(1 0 0) has been analyzed in normal emission as a function of photon energy. Assuming conservation of the perpendicular wave vector k ⊥ , the cross section maxima can be assigned to direct transitions from the (initial) quantum well state to bulk-like final states. The value of k ⊥ is obtained from the sharp k ⊥ distribution of specific quantum well states, which is centered about discretized k ⊥ values. Our data are compared with free-electron-like models and a low energy electron diffraction calculation of high-energy states in bulk Cu.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7f43f6a87a54487cc488679d1a2d7ed1 https://doi.org/10.1016/s0039-6028(01)00713-0 Zobrazit plný text záznamu Full Text from ScienceDirect