Advanced Materials

High-temperature superconductivity: Four years since Bednorz end Müller


  • Dr. Paul M. Grant

    1. IBM Research Division, Almaden Research Center 650 Harry Road, San Jose, California 95120-6099 (USA)
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    • Received a B.S. degree in electrical engineering from Clarkson University in 1960 followed by a Ph.D. in physics from Harvard University in 1965. Later in the same year, he joined the IBM San Jose Research Laboratory as a Research Staff Member. Since then, Dr. Grant has conducted research primarily in the field of organic superconductors periodically holding several technical staff positions to senior management in the IBM Research Division. In late 1986 he became involved in high-temperature superconductivity and organized the team at the Almaden Research Center which identified the structure and the optimal processing conditions for the 90 K family of 1-2-3 superconductors. His current interests are the study of the relationship between structure and electronic properties of the perovskite family of high-Tc compounds.

  • This review is an extension of an invited talk delivered in January, 1989, to the 10th Low Temperature Physics Conference held in Cocoyoc, México, organized under the auspices of the Instituto de Investigaciones en Materiales, Universidad Nacional Automona de México. I would like to thank the organizers for the opportunity to begin this review and for their hospitality during the conference, and my friends and colleagues in México, as well as those at the IBM Almaden Research Center, especially E. M. Engler, for numerous helpful discussions on the topics covered herein. I. also want to thank Jim Russel, Ellen Feinberg and Paul Berdahl for providing the data contained in Table 1, and the IBM Science Center, Winchester, UK, for generating the computer graphics necessary for Figures 1–6.


The history, development, theory, experiment and applications of high-Tc superconducting materials are covered in depth by one of the leading figures in the area. The importance of patents to the inductrial effort is analyzed and the possible mechanisms responsible for the phenomenon described.