Interrelation of Structure, Dimensionality and Superconductivity in the High-Temperature Superconductor YBa2Cu3O7-δ

J. van den Berg; C. J. van der Beek; P. H. Kes; G. J. Nieuwenhuys; J. A. Mydosh; H. W. Zandbergen; F. P. F. van Berkel; R. Steens; D. J. W. Ijdo

doi:10.1209/0295-5075/4/6/016

Interrelation of Structure, Dimensionality and Superconductivity in the High-Temperature Superconductor YBa₂Cu₃O_7-δ

J. van den Berg¹, C. J. van der Beek¹, P. H. Kes¹, G. J. Nieuwenhuys¹, J. A. Mydosh¹, H. W. Zandbergen², F. P. F. van Berkel², R. Steens² and D. J. W. Ijdo²

Published under licence by IOP Publishing Ltd
Europhysics Letters, Volume 4, Number 6 Citation J. van den Berg et al 1987 EPL 4 737 DOI 10.1209/0295-5075/4/6/016

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¹ Kamerlingh Onnes Laboratory, University of Leiden, P.O.Box 9506 - 2300RA Leiden, The Netherlands

² Gorlaeus Laboratories, University of Leiden, P.O.Box 9506 - 2300RA Leiden, The Netherlands

Dates

Received 2 June 1987

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Abstract

We have measured x-ray diffraction (XRD), high-resolution electron microscopy (HREM), resistivity and susceptibility for a series of differently prepared YBa₂Cu₃O_7-δ samples. The high-temperature superconductivity was studied as a function of variable quench temperature. Quenching above 820 °C leaves the sample in the tetragonal phase and destroys the superconductivity. We suggest that the supercondutivity is located in the CuO chains which are extremely sensitive to oxygen loss.

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