By Cooper L.N., Feldman D. (eds.)
The BCS thought of superconductivity built in 1957 by way of Bardeen, Cooper and Schrieffer has been remarkably winning in explaining the homes of superconductors. furthermore, recommendations from BCS were integrated into different fields of physics, from nuclear physics and dense quark topic to the present typical version. functional functions contain SQUIDs, magnetic resonance imaging, superconducting electronics and the transmission of electrical energy. This worthwhile publication is a compilation of either a ancient account and a dialogue of the present kingdom of concept and scan. With contributions from many well-known scientists, it goals to introduce scholars and researchers to the origins, the effect and the present country of the BCS conception.
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Extra resources for Bardeen Cooper and Schrieffer: 50 Years
34 His theory was based on the assumption that strong Coulomb interactions dramatically alter the character of electrons. Instead of forming plane waves, electrons near the Fermi energy would localize. The model was treated using a variational single electron wave function. Heisenberg realized that a crucial challenge for any theory of superconductivity was to derive the tiny observed energy advantage of the superconducting state, compared to other possible states. His search for new bound states in the vicinity of the Fermi energy was quite original and clearly pointed in the right direction.
Fig. 4. Cooper. 5in The Road to BCS ch2 25 where all electrons are treated, but we treat them in the second quantization formalism corresponding to pairs of zero momentum, and try and solve that problem” . . And the fact that we concentrated on the pairs of zero momentum, rather than trying to treat all momentum pairs simultaneously, was to a certain extent out of simplicity: do the simplest thing first, if it doesn’t work, then go on to the next most complicated. That seemed obvious. But then the problem came, we couldn’t even solve that simplest of problems.
We know now that superconductivity is a macroscopic quantum eﬀect. Even though many elements of the new quantum theory were developed by Planck, Bohr, Sommerfeld, Einstein and others starting in 1900, it is clear in hindsight that it was hopeless to explain superconductivity before the formulation of quantum mechanics by Heisenberg8 and Schr¨ odinger9 during 1925–1926. ”10 The vague ideas resulted out of his own eﬀorts to understand superconductivity using the concept of “molecular conduction chains” that carry supercurrents.