Anomalous Transport Behavior of a Binary Cd-Yb Icosahedral Quasicrystal

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 an...

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Published in:Japanese Journal of Applied Physics 2001-09, Vol.40 (9A), p.L912
Main Authors: J. Sato, Ryuji Tamura, Pan Tsai, Ang
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Language:English
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description 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·K 2 ), and the Debye temperature Θ D 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.
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title Anomalous Transport Behavior of a Binary Cd-Yb Icosahedral Quasicrystal
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