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Photoemission and o...
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Suchodolskis, A.
(författare)
Photoemission and optical spectroscopy of i-ZnMgEr quasicrystal
- Artikel/kapitelEngelska2005
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LIBRIS-ID:oai:DiVA.org:kth-14565
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-14565URI
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https://doi.org/10.12693/APhysPolA.107.412DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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QC 20100525 QC 20111011. 12th International Symposium on Ultrafast Phenomena in Semiconductors (12-UFPS). Vilnius, LITHUANIA. AUG 22-25, 2004
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The results of photoemission and optical studies of icosahedral single-grain ZnMgEr quasicrystals are presented. Synchrotron radiation photoemission measurements were performed on in situ cleaved samples at 10(-10) mbar pressure and low, 140-150 K temperature. The valence band photoemission spectra measured reveal a simple metal-type valence band of icosahedral ZnMgEr with a distinct Fermi edge cut-off and with a sharp pseudogap feature. The photoemission spectra of shallow Mg 2p and Zn 3d core levels indicate a coordination shift of Mg 2p spin-orbit doublet and an oscillating dependence of Zn 3d photoemission line components on the photon energy within the hv = 20-160 eV range investigated. The optical response of icosahedral ZnMgEr, a dispersion of the dielectric function, was measured by the spectroscopic ellipsometry technique in the 0.5-5.0 eV spectral range. The optical spectra of the quasicrystal indicate the Drude-type optical response superimposed with a peak of interband optical transitions. The interband optical transitions can be modelled with the pseudogap parameters which agree with those deduced in an analysis of the photoemission valence band spectra.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Assmus, W.
(författare)
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Babonas, G. J.
(författare)
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Giovanelli, L.
(författare)
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Karlsson, Ulf O.KTH,Materialfysik, MF(Swepub:kth)u19hnak8
(författare)
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Karpus, V.
(författare)
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Le Lay, G.
(författare)
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Reza, A.
(författare)
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Uhrig, E.
(författare)
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KTHMaterialfysik, MF
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Acta Physica Polonica. A107:2, s. 412-4190587-42461898-794X
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