Effects of spin-flip scattering on the dynamics of the superconducting order parameter

Technical Report · Sun Jun 01 04:00:00 EDT 1980

DOI:https://doi.org/10.2172/5176579· OSTI ID:5176579

Aspen, F E

Measurements of the imaginary part of the pair-field susceptibility X'' have been carried out on dirty-limit Al-Er alloy films. Aluminum films with erbium concentrations of up to one atomic percent were incorporated as the low T/sub c/ film of an asymmetric Josephson junction. The excess current I/sub ex/ due to pair tunneling was measured as a function of the bias voltage V and of the magnetic field H, applied in the plane of the junction, at temperatures within 20% of the critical temperature T/sub c/. Comparison to theory was facilitated by noting that X''(..omega..,k) varies as I/sub ex/(V,H) where the frequency ..omega.. and wave-number k are related to V and H via the Josephson relations.

• Research Organization: Minnesota Univ., Minneapolis (USA). School of Physics and Astronomy
• DOE Contract Number: AS02-76ER01569
• OSTI ID: 5176579
• Report Number(s): DOE/ER/01569-149
• Country of Publication: United States
• Language: English

Related Subjects

656101* -- Solid State Physics-- Superconductivity-- General Theory-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
JOSEPHSON JUNCTIONS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
ORDER PARAMETERS
PHYSICAL PROPERTIES
SPIN FLIP
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
TUNNEL EFFECT