Abstract
Muon spin rotation (μSR) is applied to La2−x Ba x CuO4 aroundx=0.12 where the superconductivity (SC) is suppressed remarkably. The magnetic ordering of Cu-moments appears below 35 K in the narrow range ofx where a lattice instability from the low temperature orthorhombic (LTO) to the low-temperature tetragonal (LTT) structure exists. The present study suggests strongly that the magnetic ordering of Cu-moments is an important factor in the suppression of high-T c superconductivity aroundx=0.12 in La2−x Ba x CuO4. Similar results are obtained for the La2−x Sr x CuO4 and La2−x−y Sr x Nd y CuO4 systems.
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Kumagai, Ki., Kawano, K., Fujiwara, K. et al. Competition of magnetic order and superconductivity investigated by positive muon spin rotation in La2−x M x CuO4 (M = Ba, Sr) aroundx=0.12. Hyperfine Interact 79, 929–935 (1993). https://doi.org/10.1007/BF00567629
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DOI: https://doi.org/10.1007/BF00567629