Shiba-Rusinov theory of magnetic impurities in superconductors beyond s-wave scattering: Eliashberg formalism
Shiba-Rusinov theory of magnetic impurities in isotropic superconductors beyond the s-wave scattering is generalized by using the Eliashberg formalism. The analytical expressions for the transition temperature T/sub c/ and the specific-heat jump ..delta..C are given using the square-well model for the electron-phonon interaction. Taken as a function of the impurity concentration, the quantities T/sub c//T/sub c0/ and ..delta..C/..delta..C/sub 0/ depend on the microscopic parameters lambda, ..mu..( and ..omega../sub D/ of the host material. However, this dependence is absent if one plots the above properties versus the normalized impurity concentration ..cap alpha../..cap alpha../sub cr/ or if ..delta..C/..delta..C/sub 0/ vs T/sub c//T/sub c0/ is studied. (T/sub c/0 and ..delta..C/sub 0/ are values of T/sub c/ and ..delta..C, respectively, in the absence of impurities; lambda is the electron-phonon interaction parameter, ..mu..( is the Coulomb pseudopotential, and ..omega../sub D/ is the Debye cutoff frequency; ..cap alpha.. is the spin-flip scattering rate; ..cap alpha../sub cr/ is the value of ..cap alpha.. for which T becomes zero.)
- Research Organization:
- Guelph-Waterloo Program for Graduate Work in Physics, Department of Physics, University of Waterloo, Waterloo, Ontario, Canada N2L3G1
- OSTI ID:
- 6403343
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Vol. 30:5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
SUPERCONDUCTORS
IMPURITIES
ANALYTICAL SOLUTION
ELECTRON-PHONON COUPLING
GORKOV-ELIASHBERG THEORY
GREEN FUNCTION
SPECIFIC HEAT
STRONG-COUPLING MODEL
THEORETICAL DATA
TRANSITION TEMPERATURE
DATA
FUNCTIONS
INFORMATION
MATHEMATICAL MODELS
NUMERICAL DATA
PARTICLE MODELS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
656101* - Solid State Physics- Superconductivity- General Theory- (-1987)