Indications for a metal-insulator transition in quasicrystalline i-AlPdRe
C. GignouxLEPES-CNRS - BP 166, F-38042 Grenoble Cedex 9, FranceClaire BergerLEPES-CNRS - BP 166, F-38042 Grenoble Cedex 9, FranceG. FourcaudotLEPES-CNRS - BP 166, F-38042 Grenoble Cedex 9, FranceJ.C. GriecoLEPES-CNRS - BP 166, F-38042 Grenoble Cedex 9, FranceH. RakotoSNCMP-INSA - avenue de Rangueil, F-31077 Toulouse Cedex, France
1997en
ABI
Аннотация
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 σ(T) varying like Tα (1 ⩽ α ⩽ 1.5) in a wide temperature range from 7 K to 700 K.
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