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

Research output: Contribution to journalLetter

30 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)L912-L914
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume40
Issue number9 A/B
DOIs
Publication statusPublished - 2001 Sep 15

Keywords

  • Cadmium-ytterbium
  • Electrical resistivity
  • Magnetic susceptibility
  • Magnetoresistance
  • Quasicrystal
  • Specific heat

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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