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Valence band structure of i-ZnMgEr quasicrystal: photoemission study
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.ORCID iD: 0000-0001-7409-575X
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2004 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 16, no 50, 9137-9142 p.Article in journal (Refereed) Published
Abstract [en]

The results of photoemission study 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 i-ZnMgEr with a distinct Fermi edge cutoff and a spectral feature at 0.7 eV below epsilon(F). Analysis of the PE spectra shows that the spectral feature observed corresponds to the van Hove singularities in the density of states, which are due to intersections of the Fermi surface with the 222100 and 311111 Bragg planes.

Place, publisher, year, edition, pages
2004. Vol. 16, no 50, 9137-9142 p.
URN: urn:nbn:se:kth:diva-23995DOI: 10.1088/0953-8984/16/50/004ISI: 000226292800007ScopusID: 2-s2.0-10944224246OAI: diva2:342694
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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Karlsson, Ulf O.
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