Intermediate-valence quasicrystal of a Cd-Yb alloy under pressure

Daichi Kawana, Tetsu Watanuki, Akihiko MacHida, Takahisa Shobu, Katsutoshi Aoki, Ampo Sai

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    A quasiperiodic intermediate-valence system was prepared by applying pressure to an icosahedral Cd-Yb quasicrystal. In this system, each quasiperiodic lattice point has a charge degree of freedom. Yb LIII x-ray absorption spectroscopy experiments demonstrate that the Yb valence increases continuously upon compression from a divalent state at ambient pressure and reaches 2.33 at 31.7 GPa. A comparison study to the crystalline approximant suggests that the quasiperiodically arranged Yb ions have a homogeneous intermediate valence that takes a valence fluctuation state under pressure.

    Original languageEnglish
    Article number220202
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume81
    Issue number22
    DOIs
    Publication statusPublished - 2010 Jun 25

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

    Fingerprint

    Dive into the research topics of 'Intermediate-valence quasicrystal of a Cd-Yb alloy under pressure'. Together they form a unique fingerprint.

    Cite this