Abstract
The negative muon (μ−) was used as a microscopic probe for the study of the electronic state at the oxygen site in highT c related LaSrCuO materials. Using good single crystals, two types of signals are obtained corresponding to two different oxygen sites: one highly anisotropic, which shows a large (order of 1%) shift under the magnetic field inc-axis direction, the other less anisotropic and with a smaller amplitude (order of 0.2%). These results of μ−OSR show quit a difference with the result of17O-NMR, where the paramagnetic shift has axial symmetry along the Cu-O bond direction and a magnitude of the order of 0.2% and 0.05%.
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Nishiyama, K., Kojima, K., Nagamine, K. et al. Anisotropic paramagnetic shift of μ−O in the highT c related materials LaSrCuO and LaCuO. Hyperfine Interact 79, 873–878 (1993). https://doi.org/10.1007/BF00567620
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DOI: https://doi.org/10.1007/BF00567620