Basic Research on the Correlation of Superconducting Properties with Surface Properties in Both Thin Film and Bulk Superconducting.

摘要

This report details the accomplishments of a study of the correlation of surface properties and superconducting properties of thin film superconductors. This report may be conveniently divided into three broad areas, (1) surface characterization, (2) thin film deposition, and (3) superconducting measurements. Thin films of niobium were sputter gun deposited under controlled conditions and subsequently analyzed using auger electron spectroscopy. The film thickness was varied and critical temperature measured. A technique for measuring the surface roughness was developed.