Negative magnetoresistance behaviour and variable range hopping conduction in insulating NbSi amorphous alloys at very low temperature with magnetic field

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

doi:10.1117/12.924342

27 September 2012 Negative magnetoresistance behaviour and variable range hopping conduction in insulating NbSi amorphous alloys at very low temperature with magnetic field

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

Author Affiliations +

Proceedings Volume 8459, Physical Chemistry of Interfaces and Nanomaterials XI; 84590X (2012) https://doi.org/10.1117/12.924342
Event: SPIE NanoScience + Engineering, 2012, San Diego, California, United States

Abstract

We present results of an experimental study of magnetoresistance (MR) in insulating NbSi amorphous alloys sample showing Variable Range Hopping (VRH) conductivity ; The MR is found to be negative in a wide range of low temperature (4.2-20 K) and in the range of moderate magnetic fields (0-4 T). We made tentative analysis using three theoretical models which are the model of quantum interference, the model of Zeeman effect and the model of localized magnetic moments.

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Abdelghani Sybous, Abdelhamid El Kaaouachi, Abdelfattah Narjis, Lhoussine Limouny, Said Dlimi, and Gerard Biskupski "Negative magnetoresistance behaviour and variable range hopping conduction in insulating NbSi amorphous alloys at very low temperature with magnetic field", Proc. SPIE 8459, Physical Chemistry of Interfaces and Nanomaterials XI, 84590X (27 September 2012); https://doi.org/10.1117/12.924342

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