Negative Magnetoresistance Behaviour and Variable Range Hopping Conduction in Insulating NbSi Amorphous Alloys at Very Low Temperature with aagnetic Field — Oak Academic Publishing
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Negative Magnetoresistance Behaviour and Variable Range Hopping Conduction in Insulating NbSi Amorphous Alloys at Very Low Temperature with aagnetic Field
Research Group in ESNPS, Physics Department, University Ibn Zohr, Faculty of Sciences, B.P 8106, Hay Dakhla, Agadir, Morocco
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Research Group in ESNPS, Physics Department, University Ibn Zohr, Faculty of Sciences, B.P 8106, Hay Dakhla, Agadir, Morocco
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Laboratoire de Physique de la Matière Condensée, Faculté des Sciences et Techniques de Mohammadia, Département de Physique, Mohammedia, Morocco
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Research Group in ESNPS, Physics Department, University Ibn Zohr, Faculty of Sciences, B.P 8106, Hay Dakhla, Agadir, Morocco
,
Research Group in ESNPS, Physics Department, University Ibn Zohr, Faculty of Sciences, B.P 8106, Hay Dakhla, Agadir, Morocco
,
Research Group in ESNPS, Physics Department, University Ibn Zohr, Faculty of Sciences, B.P 8106, Hay Dakhla, Agadir, Morocco
,
Research Group in ESNPS, Physics Department, University Ibn Zohr, Faculty of Sciences, B.P 8106, Hay Dakhla, Agadir, Morocco
,
Laboratoire de Spectroscopie Hertzienne LSH, Batiment P5, Université des Sciences et Technologies de LilleI 59 655 Villeneuve d’Ascq Cedex France
1 Research Group in ESNPS, Physics Department, University Ibn Zohr, Faculty of Sciences, B.P 8106, Hay Dakhla, Agadir, Morocco
2 Research Group in ESNPS, Physics Department, University Ibn Zohr, Faculty of Sciences, B.P 8106, Hay Dakhla, Agadir, Morocco
3 Laboratoire de Physique de la Matière Condensée, Faculté des Sciences et Techniques de Mohammadia, Département de Physique, Mohammedia, Morocco
4 Research Group in ESNPS, Physics Department, University Ibn Zohr, Faculty of Sciences, B.P 8106, Hay Dakhla, Agadir, Morocco
5 Research Group in ESNPS, Physics Department, University Ibn Zohr, Faculty of Sciences, B.P 8106, Hay Dakhla, Agadir, Morocco
6 Research Group in ESNPS, Physics Department, University Ibn Zohr, Faculty of Sciences, B.P 8106, Hay Dakhla, Agadir, Morocco
7 Research Group in ESNPS, Physics Department, University Ibn Zohr, Faculty of Sciences, B.P 8106, Hay Dakhla, Agadir, Morocco
8 Laboratoire de Spectroscopie Hertzienne LSH, Batiment P5, Université des Sciences et Technologies de LilleI 59 655 Villeneuve d’Ascq Cedex France
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
KeywordsNbSi Amorphous AlloysNegative MagnetoresistanceMagnetic FieldLocalized Magnetic momentsQuantum Interference
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