The metal-insulator transition in 'random'Al-Ge films

Ralph Rosenbaum; Vardit Goldner; Joseph Shoshany; David S. McLachlan; Mike Witcomb

doi:10.1007/BF02570200

The metal-insulator transition in 'random'Al-Ge films

Ralph Rosenbaum^*, Vardit Goldner, Joseph Shoshany, David S. McLachlan, Mike Witcomb

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Electronic transport properties have been measured on 3500 Å 'random' Al-Ge films. The room temperature resistivity exhibits a sharp discontinuous jump at the metal-insulator transition at the critical metallic fraction, φ_c = 8.8 vol% Al. A new procedure is described for extracting values for the zero temperature conductivity σ(0) from the metallic low temperature conductivity data. When σ(0) is extrapolated to zero as a function of Al content, the value obtained for the critical aluminum fraction σ_c is in good agreement with the room temperature value.

Original language	English
Pages (from-to)	2427-2428
Number of pages	2
Journal	Czechoslovak Journal of Physics
Volume	46
Issue number	SUPPL. 5
DOIs	https://doi.org/10.1007/BF02570200
State	Published - 1996

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abstract = "Electronic transport properties have been measured on 3500 {\AA} 'random' Al-Ge films. The room temperature resistivity exhibits a sharp discontinuous jump at the metal-insulator transition at the critical metallic fraction, φc = 8.8 vol% Al. A new procedure is described for extracting values for the zero temperature conductivity σ(0) from the metallic low temperature conductivity data. When σ(0) is extrapolated to zero as a function of Al content, the value obtained for the critical aluminum fraction σc is in good agreement with the room temperature value.",

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AU - Shoshany, Joseph

AU - McLachlan, David S.

AU - Witcomb, Mike

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AB - Electronic transport properties have been measured on 3500 Å 'random' Al-Ge films. The room temperature resistivity exhibits a sharp discontinuous jump at the metal-insulator transition at the critical metallic fraction, φc = 8.8 vol% Al. A new procedure is described for extracting values for the zero temperature conductivity σ(0) from the metallic low temperature conductivity data. When σ(0) is extrapolated to zero as a function of Al content, the value obtained for the critical aluminum fraction σc is in good agreement with the room temperature value.

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JO - Czechoslovak Journal of Physics

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IS - SUPPL. 5

ER -

The metal-insulator transition in 'random'Al-Ge films

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