Anomalous transport behavior of a binary Cd-Yb icosahedral quasicrystal

Ryuji Tamura, Yohsuke Murao, Shin Takeuchi, Kazuyasu Tokiwa, Tsuneo Watanabe, Taku J. Sato, Ang Pan Tsai

    研究成果: Letter査読

    30 被引用数 (Scopus)

    抄録

    Electronic properties of the recently discovered binary Cd-Yb icosahedral(i) phase have been found to be strikingly different from those of ternary i-phases studied so far: The resistivity decreases rapidly (by 10-80% depending on the composition) with decreasing temperature down to about 10 K and levels off below 10 K. A giant magnetoresistance reaching as high as 200% at 9 T is observed at low temperatures. The electronic specific heat coefficient γ is very large, i.e., 2.87 mJ/(mole·K2), and the Debye temperature ΘD is as low as 140 K, which are in striking contrast with the trend observed in ternary i-phases. These anomalous features indicate that a different transport mechanism other than those proposed for ternary i-phases has to be considered for the present binary i-phase.

    本文言語English
    ページ(範囲)L912-L914
    ジャーナルJapanese Journal of Applied Physics, Part 2: Letters
    40
    9 A/B
    DOI
    出版ステータスPublished - 2001 9 15

    ASJC Scopus subject areas

    • 工学(全般)
    • 物理学および天文学(その他)
    • 物理学および天文学(全般)

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