http://www.cnr.it/ontology/cnr/individuo/prodotto/ID193041
Acoustic Surface Plasmon Dispersion on Nanostructured Cu(111) (Articolo in rivista)
- Type
- Label
- Acoustic Surface Plasmon Dispersion on Nanostructured Cu(111) (Articolo in rivista) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1007/s11468-011-9310-8 (literal)
- Alternative label
L. Vattuone, G. Vercelli, M. Smerieri, L. Savio, M. Rocca (2012)
Acoustic Surface Plasmon Dispersion on Nanostructured Cu(111)
in Plasmonics (Norwell, Mass.); SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 (Stati Uniti d'America)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- L. Vattuone, G. Vercelli, M. Smerieri, L. Savio, M. Rocca (literal)
- Pagina inizio
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Dipartimento di Fisica, Università di Genova and IMEM-CNR, U.O.S. Genova
Via Dodecaneso 33,
16146 Genoa, Italy (literal)
- Titolo
- Acoustic Surface Plasmon Dispersion on Nanostructured Cu(111) (literal)
- Abstract
- In the present paper, the acoustic surface plasmon
(ASP) dispersion is investigated on nanostructured Cu(111)
by angle-resolved high-resolution electron energy loss spectroscopy
(HREELS). The surface is prepared by ion bombardment
at different crystal temperatures and ion fluences,
following the recipes given by J. Naumann et al. (Surf Sci
388:212-219, 1997). We demonstrate that, at room temperature,
the ASP survives to the disordering introduced by
sputtering. The slope of the dispersion curve is thereby
slightly reduced with respect to the one measured on pristine
Cu(111), in accord with the disorder induced up-shift of the
Shockley surface state. When ion bombardment is performed
at 393 K and the surface restructures at the nanoscale
forming hexagonal holes, an additional sharp loss is
observed at 0.87 eV for wave vectors around 0.15 ?,
while the ASP loss gradually faints off with sputtering dose.
Eventually, HREELS shows evidence only for the interband
transition from the bottom of the Shockley surface state to
the Fermi level. (literal)
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