Physics – Condensed Matter – Materials Science
Scientific paper
2008-09-24
J. Appl. Phys. 105, 093909 (2009).
Physics
Condensed Matter
Materials Science
7 pages, 8 figures; accepted for publication in J. Appl. Phys
Scientific paper
10.1063/1.3123803
Metal mixed polymers are a cheap and effective way to produce flexible metals and superconductors. As part of an on-going effort to learn how to tune the properties of these systems with ion implantation, we present a study of the electrical properties of these systems prior to metal-mixing. We show that the electrical properties of tin-antimony thin films are remarkably robust to variations in the substrate morphology. We demonstrate that the optical absorbance of the films at a fixed wavelength provides a reliable and reproducible characterization of the relative film thickness. We find that as the film thickness is reduced, the superconducting transition in the unimplanted thin films is broadened, but the onset of the transition remains at ~3.7 K, the transition temperature of bulk Sn. This is in marked contrast to the behavior of metal mixed films, which suggests that the metal mixing process has a significant effect of the physics of the superconducting state beyond that achieved by reducing the film thickness alone.
Divakar Ujjual
Meredith Paul
Micolich Adam P.
Powell Ben J.
Stephenson Andrew P.
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