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Photoemission spectroscopy study of si-ZnMgHo quasicrystals
KTH, School of Information and Communication Technology (ICT), Material Physics.
KTH, School of Information and Communication Technology (ICT), Material Physics, Material Physics, MF.ORCID iD: 0000-0001-7409-575X
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2008 (English)In: Optical materials (Amsterdam), ISSN 0925-3467, E-ISSN 1873-1252, Vol. 30, no 5, 690-692 p.Article in journal (Refereed) Published
Abstract [en]

The results of photoemission spectroscopy of the simple-icosahedral single-grain ZnMgHo quasicrystals are presented. Synchrotron radiation photoemission measurements were performed on in situ cleaved samples at 10(-10) mbar pressure and low, 160 K, temperature. The valence band photoemission spectra measured reveal a simple metal type valence band with a distinct Fermi edge and a sharp pseudogap feature, which originates from the van Hove singularities in the density of states. The photoemission spectra of the Mg 2p core level show the coordination shifts of Mg 2p, spin-orbit doublet due to inequivalent Mg sites in the quasicrystalline lattice.

Place, publisher, year, edition, pages
2008. Vol. 30, no 5, 690-692 p.
Keyword [en]
quasicrystals, pseudogap, photoemission spectroscopy
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-38348DOI: 10.1016/j.optmat.2007.02.011ISI: 000252554800007Scopus ID: 2-s2.0-37249014459OAI: oai:DiVA.org:kth-38348DiVA: diva2:436964
Note
International Workshop on Advanced Spectroscopy and Optical Materials Location: Inst Expt Phys, Univ Gdansk, Gdansk, POLAND Date: JUN 11-14, 2006 Available from: 2011-08-25 Created: 2011-08-25 Last updated: 2017-12-08Bibliographically approved

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Karlsson, Ulf O.

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