Abstract
Zero-field muon-spin-rotation (μSR) measurements on (Y1− x Pr x )Ba2Cu3O7 [x=1.0, 0.8, 0.6, and 0.54] show evidence for antiferromagnetic ordering of the Cu moments within the Cu−O planes, with Néel temperatures 285, 220, 35. 30 and 20 K, respectively. Forx=1.0 the local muon magnetic field is ≈16 mT, but decreases to ≈12 mT at 17K, due to additional magnetic ordering. The zero-field data, in conjunction with transport data, allow construction of a complete phase diagram for this system. Transverse-field (1 kOe) μSR data forx=0.2 (T c =75 K) show that the muon depolarization is determined primarily by the Cu nuclear moments forT>T c , and by the vortex state forT<T c . Fitting the superconducting-state data to a BCS model yields an extrapolated zero-temperature magnetic penetration depth of 2170 Å.
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Cooke, D.W., Jahan, M.S., Kwok, R.S. et al. Transverse-and zero-field μSR investigation of magnetism and superconductivity in (Y1−xPr x )Ba2Cu3O7 . Hyperfine Interact 63, 213–218 (1991). https://doi.org/10.1007/BF02396005
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DOI: https://doi.org/10.1007/BF02396005