Intermediate-valence quasicrystals of Yb-based alloys under pressure

Tetsu Watanuki, Daichi Kawana, Akihiko Machida, Ampo Sai

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)


    A quasiperiodic intermediate-valence system is demonstrated by applying pressure to an icosahedral Cd-Mg-Yb quasicrystal as well as our previous report on a Cd-Yb quasicrystal [Phys. Rev. B 81 (2010) 220202(R)]. Yb L III-edge x-ray absorption spectroscopy experiments demonstrate that the Yb valence increases continuously upon compression from the divalent state at ambient pressure, and reaches a valence of 2.37 at 16.3 GPa. Unlike other known quasicrystals, these Yb-based quasiperiodic intermediate-valence systems have the following two characteristics. 1) Each quasiperiodic lattice point has a charge degree of freedom, and 2) pressure can control the strength of the electron correlations.

    Original languageEnglish
    Article numberSA087
    Journaljournal of the physical society of japan
    Issue numberSUPPL. A
    Publication statusPublished - 2011 Jul 1


    • High pressure
    • Intermediate valence
    • Quasicrystal
    • X-ray absorption spectroscopy

    ASJC Scopus subject areas

    • Physics and Astronomy(all)


    Dive into the research topics of 'Intermediate-valence quasicrystals of Yb-based alloys under pressure'. Together they form a unique fingerprint.

    Cite this