Current noise in MgB2 superconducting thin films
2004
Abstract In this paper we present some experimental results concerning the current noise produced during the resistive transition in MgB 2 thin films. Preliminary investigations evidenced the presence of electrical noise whose power spectrum has a region of the 1/ f n type with n ∼ 3. We suggest that the noise may originate from abrupt rearrangement of the current distribution inside the specimen during the percolative process of a diphasic system. Experimental measurements of the spectral components of the current noise taken during the resistive transition will be given and discussed.
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