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Superconductivity and the metal-nonmetal transition in Hg-Xe films.


K. Epstein, E. D. Dahlberg, A. M. Goldman
Phys. Rev. Lett. 43 p. 1889 (1979).

Abstract: The electrical conductivities and transition temperatures of films consisting of random mixtures of Hg and Xe condensed onto substrates held at 4.2K have been measured. A metal-nonmetal transition in which the temperature coefficient of resistance changes from positive to negative has been found near a volume fraction close to that expected for random percolation. This transition is accompanied by a substantial drop in the superconducting transition temperature which is measured resistively. (17 References).





last modified: 10.Jun.2002 by Thomas Gredig