WFRF:(Suchodolskis A.)
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Pseudogap structure in icosahedral ZnMgY and ZnMgHo quasicrystals
- Suchodolskis, A. (author)
- Assmus, W. (author)
- Cechavicius, B. (author)
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- Dalmas, J. (author)
- Giovanelli, L. (author)
- Karpus, V. (author)
- Le Lay, G. (author)
- Sterzel, R. (author)
- Uhrig, E. (author)
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- (creator_code:org_t)
- 2003
- 2003
- English.
- In: Applied Surface Science. - 0169-4332 .- 1873-5584. ; 212, s. 485-490
- Journal article (peer-reviewed)
Abstract
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- The results of a photoemission study of icosahedral single-grain ZnMg(Y, Ho) quasicrystals and their crystalline approximant Zn2Mg are presented. Synchrotron radiation photoemission measurements have been performed on in situ cleaved samples at low temperature of approximate to90 K and 10(-10) mbar pressure. The spectra obtained indicate simple metal-type valence bands (VB) with distinct Fermi edge cutoff. Analysis of the Fermi edge spectra reveals the presence of a pseudogap in i-ZnMg(Y, Ho) quasicrystals. The pseudogap corresponds to a rather sharp DOS dip at the Fermi level with th approximate to50% (of the normal DOS) depth and the approximate to0.8 eV width. The values of i-ZnMg(Y, Ho) pseudogap parameters are comparable with those of other quasicrystals.
Keyword
- quasicrystals
- pseudogap
- photoemission spectroscopy
- energy
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- ref (subject category)
- art (subject category)
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- Suchodolskis, A.
- Assmus, W.
- Cechavicius, B.
- Dalmas, J.
- Giovanelli, L.
- Göthelid, Mats
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- Karlsson, Ulf O.
- Karpus, V.
- Le Lay, G.
- Sterzel, R.
- Uhrig, E.
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- Royal Institute of Technology
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