27 September 2012 Negative magnetoresistance behaviour and variable range hopping conduction in insulating NbSi amorphous alloys at very low temperature with magnetic field
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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, Abdelghani Sybous, Abdelhamid El Kaaouachi, Abdelhamid El Kaaouachi, Abdelfattah Narjis, Abdelfattah Narjis, Lhoussine Limouny, Lhoussine Limouny, Said Dlimi, Said Dlimi, Gerard Biskupski, 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); doi: 10.1117/12.924342; https://doi.org/10.1117/12.924342
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