Paramagnetic impurities in strong coupling superconductors

Journal Article · Wed Oct 01 04:00:00 EDT 1980 · Phys. Rev., B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.22.3194· OSTI ID:5050181

Schachinger, E; Daams, J M; Carbotte, J P

We have calculated the effect of paramagnetic impurities on strong coupling superconductors. Imaginary axis solutions of the Eliashberg gap equations with a spin-flip term form the basis of our work. We compute the variation of the critical temperature (T/sub c/) with increasing impurity concentration, the functional derivatives of T/sub c/, the specific-heat jump, the critical-field deviation function, and the tunneling characteristics which we compare with the results of Abrikosov-Gorkov theory. In all cases important strong coupling corrections are obtained.

• Research Organization: Physics Department, McMaster University, Hamilton, Ontario, Canada L8S 4M1
• OSTI ID: 5050181
• Journal Information: Phys. Rev., B: Condens. Matter; (United States), Journal Name: Phys. Rev., B: Condens. Matter; (United States) Vol. 22:7; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656101* -- Solid State Physics-- Superconductivity-- General Theory-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL FIELD
GORKOV-ELIASHBERG THEORY
INTERFERING ELEMENTS
MAGNETIC FIELDS
PHYSICAL PROPERTIES
QUANTITY RATIO
SPECIFIC HEAT
SPIN FLIP
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
TUNNEL EFFECT
TYPE-I SUPERCONDUCTORS