Abstract
The availability of high-quality and well characterized materials is a key factor for condensed-matter research [...]
Highlights
The driving force behind these efforts was Peter Allenspach, who set up a materials synthesis laboratory based on a procedure developed at the Jülich Research Center [2]
In the year 1998, Kazimierz Conder took over the responsibility for the materials synthesis laboratory
Requests to promote the status of the materials synthesis laboratory to the level of a Paul Scherrer Institute (PSI)-group failed, but thanks to the invaluable support by Alex Müller, the group “Materials Synthesis” was installed at PSI in the year 2003 with Kazimierz Conder as group leader
Summary
The discovery of the isotope effect in superconductors in the 1950s created an experimental foundation for the BCS (Bardeen, Cooper, and Schrieffer) theory, which is a microscopic theory of superconductivity announced in 1957 (Nobel Prize in 1972). K.A. Müller suggested studies of the critical temperature of the “most famous” superconducting material, i.e., YBa2Cu3O7-x (YBCO) synthesized with oxygen isotopes 16O and 18O. Müller suggested studies of the critical temperature of the “most famous” superconducting material, i.e., YBa2Cu3O7-x (YBCO) synthesized with oxygen isotopes 16O and 18O At this time, several papers on the isotope effect in HTc superconductors were already published, but the results presented were inconclusive; either very small or no effect were reported. Oxygen isotope effect in other high-temperature superconductors and related materials, e.g., magnetoresistive or exhibiting a metal-insulator transition were performed. This scientifically fruitful period ended in the late nineties with a retirement of Prof.
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