Abstract
We review important results on the influence of substitutional elements in the CuO2-planes of the high-Tc-superconductors and compare them with recent measurements on Bi2Sr2Ca1Cu2O8+δ single crystals with doping of Fe, Ni and Zn. The results on the single crystals reveal a remarkably strong influence of the in-plane impurities on the superconducting parameters. The impurities introduce a very effective elastic and inelastic scattering and cause a definitive change of the coherence length and the penetration depth.
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Westerholt, K., vom Hedt, B. In-plane impurities in high-temperature superconductors. J Low Temp Phys 95, 123–129 (1994). https://doi.org/10.1007/BF00754929
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DOI: https://doi.org/10.1007/BF00754929