22 December 1998 Strategies for increasing the critical temperature of superconductors
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Abstract
Since the discovery of superconductivity in 1911, most of the tailoring of new superconducting materials have been based on empirical criteria such as educated substitutions inspired by the periodic table. This task has become very complicated with the advent of high Tc oxide superconductors. In particular, it would be difficult to envisage new superconducting systems different from cuprates and bismuthates. By analyzing as to how some superconducting materials were discovered, four strategies are proposed. These are based on: (1) band structure calculations, which may lead to systems different from known ones; (2) high resolution electron microscopy studies, which may lead to different structural arrangements within the same systems; (3) systematic studies of phase diagrams; (4) in-situ high pressure studies of the critical temperature of known systems, which may lead to cation or anion substitutions simulating at ambient the structure stable under pressure and responsible for the higher Tc. An example of the latter strategy is discussed in detail.
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Massimo Marezio, Massimo Marezio, Francesca Licci, Francesca Licci, Andrea Gauzzi, Andrea Gauzzi, } "Strategies for increasing the critical temperature of superconductors", Proc. SPIE 3481, Superconducting and Related Oxides: Physics and Nanoengineering III, (22 December 1998); doi: 10.1117/12.335871; https://doi.org/10.1117/12.335871
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