Advances in Condensed Matter Physics / 2013 / Article / Fig 2

Research Article

Aging Effect on Electrical Conductivity of Pure and Al-Doped YBa2Cu3O7−δ Single Crystals with a Given Topology of Planar Defects

Figure 2

The temperature dependence of the single crystals (a) and (b) before and after long aging in ambient air, curves 1 and 2, respectively. The arrows show the mean-field transition temperature to the pseudogap regime. The extrapolated values of are traced by the dashed straight lines. The insets show the superconducting transitions in and coordinates for the same samples. The numbering of the curves in the insets corresponds to that in the main panels.

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