Study of electrical conductivity and scale theory in metallic n-type GeSb

Abdelghani Sybous; Abdelhamid El Kaaouachi; Abdelfattah Narjis; Lhoussine Limouny; Said Dlimi; Gerard Biskupski

doi:10.1117/12.924339

27 September 2012 Study of electrical conductivity and scale theory in metallic n-type GeSb

Abdelghani Sybous, Abdelhamid El Kaaouachi, Abdelfattah Narjis, Lhoussine Limouny, Said Dlimi, Gerard Biskupski

Proceedings Volume 8459, Physical Chemistry of Interfaces and Nanomaterials XI; 84590W (2012) https://doi.org/10.1117/12.924339
Event: SPIE NanoScience + Engineering, 2012, San Diego, California, United States

Abstract

We present measurements of the electrical conductivity of barely metallic n-type GeSb that are driven to the metal-insulator transition (MIT) by impurity concentration. The experiments were carried out at low temperature in the range (4.2 -0.066 K) and with impurity concentrations up 6.410¹⁷ cm⁻³ . On the metallic side of the MIT, the electrical conductivity is found to behave like σ =σ₀ + mT^1/2 down to 66 mK. Physical explanation to the temperature dependence of the conductivity is given in metallic side of the MIT using a competition between two effects involved in the mechanisms of conduction, like electron-electron interaction effect, and weak localization effect.

Citation Download Citation

Abdelghani Sybous, Abdelhamid El Kaaouachi, Abdelfattah Narjis, Lhoussine Limouny, Said Dlimi, and Gerard Biskupski "Study of electrical conductivity and scale theory in metallic n-type GeSb", Proc. SPIE 8459, Physical Chemistry of Interfaces and Nanomaterials XI, 84590W (27 September 2012); https://doi.org/10.1117/12.924339

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