Electronic structure of icosahedral alloys studied by ultrahigh energy resolution photoemission spectroscopy

Z. M. Stadnik, D. Purdie, M. Garnier, Y. Baer, Ampo Sai, A. Inoue, K. Edagawa, S. Takeuchi

    Research output: Contribution to journalArticlepeer-review

    80 Citations (Scopus)

    Abstract

    The results of a systematic ultrahigh resolution ultraviolet photoemission study of the electronic structure of stable icosahedral alloys Al 64 Cu 24 Fe 12 , Al 65 Cu 20 Fe 15 , Al 70 Pd 20 Mn 10 , and Al 70.5 Pd 21 Re 8.5 are presented. It is shown that all icosahedral alloys have a clearly developed Fermi edge and are thus metallic down to the temperature of measurement (14-45 K). A marked decrease of the spectral intensity towards the Fermi level in these alloys is demonstrated to be consistent with the existence of the theoretically predicted pseudogap. With an experimental resolution of 6 meV, no evidence of the theoretically predicted spikiness of the density of states could be observed.

    Original languageEnglish
    Pages (from-to)1777-1780
    Number of pages4
    JournalPhysical Review Letters
    Volume77
    Issue number9
    DOIs
    Publication statusPublished - 1996 Jan 1

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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