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Fluctuation Magnetoconductance in MgB2

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arxiv cond-mat/0103161 v1 pith:B4C233EF submitted 2001-03-07 cond-mat.supr-con cond-mat.mtrl-sci

classification cond-mat.supr-concond-mat.mtrl-sci
keywords magnetoconductancemgb2fluctuationcompoundcriticaldeltadorseyexcess
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abstract

We report fluctuation magnetoconductance in a MgB2 superconductor prepared under a high pressure of 3 GPa. This excess magnetoconductance, $\Delta\sigma(H)$, follows the three-dimensional scaling function for the critical fluctuations proposed by Ullah and Dorsey. This feature is inferred to originate from the isotropic nature of the MgB2 compound.

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