Dimensional crossover of quantum interference effects in thin quasicrystalline Al-Cu-Fe films |
| |
Authors: | T Grenet F Giroud |
| |
Institution: | (1) LEPES-CNRS, 25 avenue des Martyrs, BP 166, 38042 Grenoble Cedex 9, France, FR |
| |
Abstract: | We present a study of the electrical transport properties of thin i-Al-Cu-Fe films. We observe clear signatures of a dimensional
crossover in the temperature and magnetic field dependence of the conductivity for films thinner that ≃ 103?. In particular for the thinnest sample the magnetoconductivity is strongly anisotropic, as is expected for the weak localisation
contribution in two dimensions. These experiments show direct qualitative manifestations of the disorder induced quantum interference
effects occurring in quasicrystals. Estimates of the electronic microscopic parameters are in accordance with those obtained
in bulk samples. Their values and significance are discussed.
Received 16 February 2001 and Received in final form 20 June 2001 |
| |
Keywords: | PACS 71 23 Ft Quasicrystals – 73 20 Fz Weak or Anderson localisation |
本文献已被 SpringerLink 等数据库收录! |
|