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Normal-state susceptibility versus oxygen content in the Y2Ba4Cu7Ox superconducting phase

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Published in Physica C: Superconductivity and Its Applications. 1992, vol. 201, no. 1-2, p. 1-5
Abstract Extensive measurements of the normal-state susceptibility have been performed on high-quality Y2Ba4Cu7Ox samples with different oxygen contents. We find a temperature dependence of the susceptibility similar to that of other high-Tc superconductors such as YBa2Cu3O7−δ. upon approaching the optimum hole doping, the normal-state susceptibility tends to become temperature-independent except for the region where superconducting fluctuations play a substantial role. For high-Tc samples (onset: 95 K) the susceptibility displays a very large rounding above Tc which can be attributed to 3D-2D superconducting fluctuations. The fluctuation temperature range extends 100 K above Tc.
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TRISCONE, Gilles et al. Normal-state susceptibility versus oxygen content in the Y2Ba4Cu7Ox superconducting phase. In: Physica C: Superconductivity and Its Applications, 1992, vol. 201, n° 1-2, p. 1-5. doi: 10.1016/0921-4534(92)90096-U https://archive-ouverte.unige.ch/unige:114695

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Deposited on : 2019-03-01

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