Mueller and Bednorz

Following the discovery of HTSC in La2Cu04 doped with Ba in the lanthanum site (Bednorz and Mueller 1986), work describing HTSC with Sr substitution in the La site was reported. The parent La2Cu04 compound (abbreviated to 214 ) has a distorted K2NiF4 structure, with an orthorhombic unit cell (a =... 

B. Raveau, C. Michel, M. Hervieu, J. Provost, and F. Studer in Earlier and Recent Aspects of Superconductivity J.G. Bednorz and K.A. Mueller, Eds. Springer-Verlag (1989). 

Beden B, Lamy C (1988) Infrared Reflectance Spectroscopy. In Gale RJ (ed) Spectroelectrochem-istry, Theory and Practice. Plenum, New York, p 189 Bednorz JG, Mueller KA (1986) Z Phys B-Condensed Matter 64 189 Beebe KR, Kowalski BR (1987) Anal Chem 59 1007A Behringer J (1958) Z Elektrochem 62 906... 

In January 1986, J. G. Bednorz and K. A. Mueller of the IBM Zurich Research Laboratory discovered high temperature superconductivity in a certain class of copper oxides U. Only a year later, superconducting transition temperatures in this class of materials had been pushed to almost 100 K (2-3), far beyond the previous record of 23 K that had remained unbroken since 1973, and well above the benchmark temperature 77 K of boiling liquid nitrogen. In addition to the scientific excitement of this extraordinary development, the possibilities for practical application of superconductivity clearly need to be re-examined, if only because of the vastly greater ease in cooling to 77 K compared to the liquid helium temperature range ( 4 K) used in all previous applications of superconductivity(4). 

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