EVIDENCE FOR UNCONVENTIONAL ELECTRONIC TRANSPORT IN QUASI-CRYSTALS

被引：183

作者：

MAYOU, D

BERGER, C

CYROTLACKMANN, F

KLEIN, T

LANCO, P

机构：

[1] Laboratoire d'Etudes des Propriétés Electroniques des Solides, Centre National de la Recherche Scientifique, 38042 Grenoble Cedex 9

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.70.3915

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The conductivity sigma of a series of AlCuFe and AlPdMn quasicrystals and approximant phases can be written sigma(T)=sigma4K + deltasigma(T). The sigma4K term is very low, decreases with improvement of structural quality, and varies strongly with composition. Deltasigma(T) is independent of the sample and increases anomalously with temperature up to 1000 K, with sigma1000K/sigma4K greater than 10. The results are interpreted by electronic hopping between structural entities separated by about 30 angstrom. Within a band picture, this process would correspond to interband transitions.

引用

页码：3915 / 3918

页数：4

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