Download BCS: 50 years by Leon N. Cooper PDF

By Leon N. Cooper

The BCS conception of superconductivity constructed in 1957 through Bardeen, Cooper and Schrieffer has been remarkably winning in explaining the homes of superconductors. additionally, techniques from BCS were integrated into various fields of physics, from nuclear physics and dense quark topic to the present normal version. useful functions comprise SQUIDs, magnetic resonance imaging, superconducting electronics and the transmission of electrical energy. This helpful booklet is a compilation of either a historic account and a dialogue of the present country of conception and scan. With contributions from many in demand scientists, it goals to introduce scholars and researchers to the origins, the effect and the present country of the BCS thought.

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Q: Well, What Did You Do? I went and chatted with Francis Low about this, because I felt that I could chat with him. He was very open. And I asked him what he thought about it, should I try this? ” and I told him. ” The program really had been worked out in John’s mind, I don’t know, ten years before or what have you . . He had this thing so nailed down on every corner: he understood the experiments, he understood the general requirements of the theory. 5in J. R. Schrieffer Fig. 1. Robert Schrieffer.

About a week after I sent in a letter to the editor outlining these ideas. Fr¨ohlich visited the Bell Telephone Laboratories where I was working at the time. He told me about his own work on a theory of superconductivity Fig. 1. John Bardeen. 5in Development of Concepts in Superconductivity ch3 35 based on electron-phonon interactions, which he had done at Purdue in the spring of 1950. Fr¨ohlich’s work was done without knowledge of the isotope effect. He was greatly encouraged when he learned, just about the time he was ready to send his manuscript to The Physical Review, about this strong experimental confirmation of his approach.

Fr¨ohlich was one of the pioneers in the use of field-theoretic methods in solid-state problems . . We have seen that the development of our understanding of superconductivity has resulted from a close interplay of theory and experiment. Physical insight into the nature of the superconducting state gained from a study of the experimental findings has been essential to make progress in the theory. Increased theoretical understanding has suggested new experiments, new paths to explore, and has helped to understand better such seemingly unrelated fields as nuclear structure and elementary particles.

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