New results on the anomalous precursor diamagnetism in the underdoped La1.9Sr0.1CuO4 superconductor

Abstract

The new results summarized here, including a brief comparison with the paraconductivity, further suggest that the anomalous precursor (above Tc) diamagnetism recently observed in the underdoped La1.9Sr0.1CuO4 superconductor could be attributed to the presence, in addition to the conventional superconducting pair fluctuations, of Tc-inhomogeneities with long characteristic lengths associated with chemical disorder.

arXiv comment8 pages (one column), including 3 figures

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Cited by in corpus (1)

• The conductivity and the magnetization around Tc in optimally-doped YBa${}_2$Cu${}_3$O${}_{7-\delta }$ revisited: quantitative analysis in terms of fluctuating superconducting pairs