New Effects in Superconductivity
The mechanism of electrical current transport through the surfaces of a superconducting metal involves questions of considerable interest in view of the recent advances both in the theory of superconductivity and in the development of superconducting circuit elements such as the Cryotron [1, 2]. The experiments of Meissner  and the theoretical work of Parmenter  have suggested that a thin layer of normal metal exhibits superconductivity when adjacent to a superconducting metal; also that the onset of superconductivity is inhibited in a metal film, ordinarily superconducting, when it is sandwiched between normal metals. Further, Dietrich  and Bedard and Meissner  have reported that a super-current can flow through a thin dielectric layer between two adjacent superconducting metal wires. In view of the importance of these suggestions, experiments were performed to determine the properties of a superconducting metal at its boundary with other metals and dielectric materials. The experiments fell into two groups. The first was concerned with the characteristics of the current through a thin dielectric layer separating two metal films, at least one a superconductor. The second group involved the properties of laminar structures formed by depositing two metals in intimate contact, one metal being a superconductor, the other a nonsuperconductor.
KeywordsNormal Metal Thin Dielectric Layer Longitudinal Resistance Superconducting Metal Negative Resistance Region
Unable to display preview. Download preview PDF.
- 2.A. E. Slade and H. O. McMahon, Proc. Eastern Joint Computer Conf., New York (December, 1956).Google Scholar
- 9.J. L. Miles and H. O. McMahon, J. Appl. Phys., (to be published).Google Scholar
- 13.S. Shapiro and P.F. Strong, Bull. Am. Phys. Soc., Vol. 6, 121 (1961).Google Scholar
- 14.P.H. Smith, S. Shapiro, and J. L. Miles, Bull. Am. Phys. Soc., Vol. 6, 121 (1961).Google Scholar
- 15.S. Shapiro, P. H. Smith, J. Nicol, J. L. Miles, and P. F. Strong, IBM J. of Res. (to be published).Google Scholar
- 17.J.F. Allen, Phil. Mag., Vol. 16, 1005 (1933).Google Scholar
- 18.Arthur D. Little, Inc., Quarterly Progress Report, p. 12 (October, 1960).Google Scholar