Are decagonal quasicrystals the Hume-Rothery phases?

Z. M. Stadnik, G. W. Zhang, A. P. Tsai, A. Inoue

    Research output: Contribution to journalArticlepeer-review

    18 Citations (Scopus)

    Abstract

    Photoemission spectroscopy measurements in the photon energy range 40-100 eV have been used to make the first determinations of the valence bands of the high quality decagonal alloys Al65Co15Cu20 and Al70Co15Ni15. Within the energy resolution our results reveal that, contrary to the prediction of recent band-structure calculations and to the widespread qualitative interpretation of various electronic transport data, there is no pseudogap in the density of states at the Fermi level. This suggests that decagonal alloys differ significantly in their electronic structure from icosahedral alloys and that a Hume-Rothery mechanism does not play an important role in accounting for their stability and electronic transport properties.

    Original languageEnglish
    Pages (from-to)237-242
    Number of pages6
    JournalPhysics Letters A
    Volume198
    Issue number3
    DOIs
    Publication statusPublished - 1995 Feb 27

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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