https://doi.org/10.1007/s100510050088
Plasmons in icosahedral quasicrystals: An EELS investigation
1
LEPES-CNRS, 25 avenue des Martyrs, BP 166, 38042 Grenoble Cedex 9, France
2
LTPCM, 1130 rue de la piscine, Domaine Universitaire, BP 75, 38402 Saint Martin
d'Hères Cedex, France
Received:
3
November
1998
Revised:
16
July
1999
Published online: 15 February 2000
Abstract
We present the results of an electron energy loss spectroscopy (EELS) investigation of the
icosahedral quasicrystals i-Al-Cu-Fe, i-Al-Pd-Mn and i-Al-Pd-Re. The spectra of the three systems studied
are very similar. Their main contribution comes from a broad plasmon like peak, which can be interpreted as
an "
" electron plasmon damped by "d" electron interband transitions. We show that it is similar
to those found in other simple crystalline aluminum-transition metal alloys, so that no specificity related
to the quasicrystalline order of the alloys dominates.
PACS: 71.23.Ft – Quasicrystals / 71.45.Gm – Exchange, correlations, dielectric and magnetic functions, plasmons
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
