Indications for a metal-insulator transition in quasicrystalline i-AlPdRe

C. Gignoux; C. Berger; G. Fourcaudot; J.C. Grieco; H. Rakoto

doi:doi:10.1209/epl/i1997-00331-2

Indications for a metal-insulator transition in quasicrystalline i-AlPdRe DOI: 10.1209/epl/i1997-00331-2

Europhys. Lett, 39 (2), pp. 171-176 (1997)

Indications for a metal-insulator transition in quasicrystalline i-AlPdRe

C. Gignoux , C. Berger , G. Fourcaudot , J. C. Grieco and H. Rakoto

LEPES-CNRS - BP 166, F-38042 Grenoble Cedex 9, France
SNCMP-INSA - avenue de Rangueil, F-31077 Toulouse Cedex, France

(received 20 February 1997; accepted in final form 6 June 1997)

PACS. 61.44Br - Quasicrystals.
PACS. 71.30 - Metal-insulator transitions and other electronic transitions.
PACS. 72.15 - Electronic conduction in metals and alloys.

Abstract:

We present indications for a metal-insulator transition in the icosahedral AlPdRe phase of high structural quality. We follow the conductivity through the transition and its dependence on temperature and magnetic field in a series of i-AlPdRe samples. Features typical for systems on both sides of the metal-insulator transition are found. Moreover, the variation of conductivity with temperature is very unusual with

varying like

(

) in a wide temperature range from 7K to 700K.


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