TRANSPORT-PROPERTIES OF AL65CU15CO20 AND AL70NI15CO15 DECAGONAL QUASI-CRYSTALS

被引：76
|
作者：
MARTIN, S
HEBARD, AF
KORTAN, AR
THIEL, FA
机构：
[1] AT and T Bell Laboratories, Murray Hill
来源：
PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 06期
关键词：
D O I：
10.1103/PhysRevLett.67.719
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The temperature-dependent resistivity of the two-dimensional quasicrystals Al65Cu15Co20 and Al70Ni15Co15 is studied along the periodic direction (rho-p) and in the quasiperiodic plane (rho-q) from 4.2 to 600 K. A transport anisotropy of <rho-q/rho-p> congruent-to 8 is measured. In both materials rho-p is metallic and can be described by a semiclassical electron-phonon scattering model. For rho-q a nonmetallic behavior is found, suggesting a phonon-assisted tunneling mechanism.
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页码：719 / 722
页数：4
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