Magnetic penetration depth of Y1-xPrxBa2Cu3O6.97 measured by muon-spin relaxation.
作者： C. L. Seaman , J. J. Neumeier , M. B. Maple , L. P. Le , G. M. Luke
关键词: Penetration depth 、 Mean free path 、 High-temperature superconductivity 、 Inorganic compound 、 Superconductivity 、 Materials science 、 Muon spin spectroscopy 、 Condensed matter physics 、 Electrical resistivity and conductivity 、 Analytical chemistry 、 Relaxation (NMR)
摘要: We have measured the magnetic penetration depth of high-{Tc} superconducting system Y{sub 1{minus}{ital x}}Pr{sub {ital x}}Ba{sub 2}Cu{sub 3}O{sub 6.97} for 0.05{le}{ital x}{le}0.4 using technique transverse-field muon-spin relaxation. The temperature dependence is similar to that related compounds YBa{sub 7{minus}{delta}} with varying oxygen content. zero-temperature relaxation rate and {Tc} both decrease monotonically x}, in a manner those increasing {delta}. This observation consistent interpretation Pr nearly tetravalent this so largely suppressed by means filling holes conducting CuO{sub 2} planes. influence pair breaking, finite mean free path, correlation results other high-{ital T}{sub c}} superconductors are discussed.
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