SEARCH FOR AN EFFECT OF SURFACE CHARGING ON THE SUPERCONDUCTING TRANSITION TEMPERATURE OF TIN FILMS
Abstract
An attempt was made to measure the rate of change of superconducting transition temperature T sub c, as a function of surface charge density, sigma, in Sn films. For films having thicknesses of 190,670 and 1460 angstroms, dT sub c/d sigma was found in all cases to be less than 30 degree sq cm/coulomb, the limit of sensitivity of the present apparatus. This negative result was compared with Glover and Sherrill's (Phys. Rev. 5:248, 1960) finding that in a Sn film 70 angstroms thick dT sub c/d sigma equals -460 degree sq cm/coulomb. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1961
- Accession Number
- AD0272233
Entities
People
- G. Bonfiglioli
- R. Malvano