naa a22 4500 510816460 CHVBK 20180411083510.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s11468-013-9587-x doi (NATIONALLICENCE)springer-10.1007/s11468-013-9587-x Collective Electronic Excitations in Thin Ag Films on Ni(111) [Elektronische Daten] [Antonio Politano, Vincenzo Formoso, Gennaro Chiarello] The collective electronic excitations in thin Ag films deposited onto the Ni(111) surface were studied by high-resolution electron energy loss spectroscopy. A broad loss peak at 7.7eV was assigned to the Ag multipole plasmon, in excellent agreement with calculations based on s-d polarization model. Ag multipole plasmon was excited only at grazing incidence. Furthermore, a strong dependence on the impinging energy exists. Multipole plasmon could be measured only for a very strict range of primary electron beam energies and it was excited by electrons scattered at a reflection plane located just underneath the jellium edge. Such mode was found to be dramatically more sensible to the state of the surface with respect to ordinary surface plasmon. Moreover, we report experimental evidence of interference effects in surface plasmon excitation. Springer Science+Business Media New York, 2013 Silver nationallicence Electron energy loss spectroscopy nationallicence Multipole plasmon nationallicence Politano Antonio Dipartimento di Fisica and CNISM, Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Università degli Studi della Calabria, 87036, Rende, CS, Italy aut Formoso Vincenzo Dipartimento di Fisica and CNISM, Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Università degli Studi della Calabria, 87036, Rende, CS, Italy aut Chiarello Gennaro Dipartimento di Fisica and CNISM, Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Università degli Studi della Calabria, 87036, Rende, CS, Italy aut Plasmonics Springer US; http://www.springer-ny.com 8/4(2013-12-01), 1683-1690 1557-1955 8:4<1683 2013 8 11468 https://doi.org/10.1007/s11468-013-9587-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11468-013-9587-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Politano Antonio Dipartimento di Fisica and CNISM, Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Università degli Studi della Calabria, 87036, Rende, CS, Italy aut NATIONALLICENCE 700 1- Formoso Vincenzo Dipartimento di Fisica and CNISM, Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Università degli Studi della Calabria, 87036, Rende, CS, Italy aut NATIONALLICENCE 700 1- Chiarello Gennaro Dipartimento di Fisica and CNISM, Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Università degli Studi della Calabria, 87036, Rende, CS, Italy aut NATIONALLICENCE 773 0- Plasmonics Springer US; http://www.springer-ny.com 8/4(2013-12-01), 1683-1690 1557-1955 8:4<1683 2013 8 11468 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer