| Issue |
EPL
Volume 87, Number 1, July 2009
|
|
|---|---|---|
| Article Number | 17010 | |
| Number of page(s) | 4 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/87/17010 | |
| Published online | 24 July 2009 | |
Polygrain icosahedral Al-Pd-Re quasicrystal as a granular electronic conductor
1
Moscow State Institute of Steel and Alloys - 119049 Moscow, Russian Federation
2
Russian Research Center “Kurchatov Institute” - 123182 Moscow, Russian Federation
Received:
4
March
2009
Accepted:
23
June
2009
The mechanism of low-temperature electronic transport in polygrain samples of icosahedral Al-Pd-Re is analyzed by analogy with granular electronic systems. The intergranular tunneling and electrostatic energy (Coulomb blockade) are responsible for a specific behaviour of the electrical conductivity in polygrain samples of icosahedral Al-Pd-Re at low temperatures. Depending on the structural state of the sample, both factors may be important and the variable-range hopping regime, of Efros-Shklovskii's type, takes place. For the strong-coupling state the tunneling prevails, and the low-temperature variation of the electrical conductivity is dominated by the Coulomb-interaction and weak-localization corrections.
PACS: 72.15.-v – Electronic conduction in metals and alloys / 71.23.Ft – Quasicrystals
© EPLA, 2009
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