Abstract
Magnetization and electrical transport measurements under magnetic field H|c are reported for L 2−xCe xCuO 4 single crystals. Close to the upper critical field line a broad region is found were field induced fluctuations dominate the reversible electromagnetic response of the crystals. Excellent scalings of 2D nature are found for enhanced diamagnetism and excess conductivity, which in addition allow to extract a linear H c2(T) close to T c.
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