Properties of New Superconducting Materials.
Final research rept.,
STANFORD UNIV CALIF EDWARD L GINZTON LAB
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A large number of new and unusual superconductors have been discovered and their superconducting response to changes effected chemically, crystallographically, and physically has been studied. In this way, the interactions giving rise to superconductivity were examined. The effort has been concentrated in two major areas. First, the two-dimensionality of layered transition metal dichalcogenides, has allowed for a closer comparison between theory and experiment. Second, studying the instabilities of the high transition temperature phases has led to a greater understanding of the role of crystal structure and stoichiometry. For example, a new method of stabilizing films of Nb3Ge with superconducting transitions above 22k enabled the homogeneous stoichiometric composition to be reached by epitaxial growth on polycrystalline substrates. Thus, new approaches have been uncovered for synthesizing compounds with even higher superconducting transition temperatures. Author
- Electricity and Magnetism