Abstract
Since the discovery of superconductivity in lamellar copper oxide materials a huge amount of experimental and theoretical works has been performed1 but there is not yet a consensus on the physical mechanism of superconductivity. In order to clarify the physics involved accurate single crystal experiments must be performed. In this context, the neutron scattering technique plays an important role because both spatial and temporal spin fluctuations can be probed. A detailed investigation of the (La- SO2CUO4 system has been carried out at Brookhaven2 and large antiferromagnetic (AF) spin correlations have been found above Tn~ 240 K and in Sr-doped samples. The AF ordering was found to be very sensitive to both the Sr content3 and the oxygen stocchiomclry: TN can be as high as 300 K4 when oxygen p-holes are no longer present in CuO2 planes.
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Rossat-Mignod, J. et al. (1991). Neutron Scattering Study of the Spin Dynamics in YBa2Cu3O6+x . In: Reiter, G., Horsch, P., Psaltakis, G.C. (eds) Dynamics of Magnetic Fluctuations in High-Temperature Superconductors. NATO ASI Series, vol 246. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-7490-9_3
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DOI: https://doi.org/10.1007/978-1-4684-7490-9_3
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