Lower critical field and magnetization of strong-coupling, type II superconductors in the dirty limit
Journal Article
·
· J. Low Temp. Phys.; (United States)
Usadel's dirty-limit version of Gorkov-Eilenberger theory including strong-coupling effects is used to calculate the lower critical field of superconducting alloys. The results of the (rigorous) numerical study, which is valid for all temperatures and Ginzburg-Landau parameters /kappa/, are compared with experiments and with the existing weak-coupling theory. One achieves agreement with the bulk of the experimental results only if /kappa/ is properly adjusted. In addition, it is shown that a circular-cell approximation for the vortex state yields highly accurate magnetization curves, which are influenced in a characteristic way by strong electron-phonon coupling.
- Research Organization:
- Physikalisches Institut der Universitaet Bayreuth (Germany, F.R.)
- OSTI ID:
- 5971997
- Journal Information:
- J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 71:5-6; ISSN JLTPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
BCS THEORY
BOUNDARY CONDITIONS
CRITICAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
ENERGY
FREE ENERGY
GINZBURG-LANDAU THEORY
GORKOV-ELIASHBERG THEORY
INDIUM ALLOYS
LEAD ALLOYS
MAGNETIC FIELDS
MAGNETIC FLUX
MAGNETIZATION
MATHEMATICAL MODELS
MATHEMATICS
NUCLEAR MODELS
NUMERICAL ANALYSIS
PARTICLE MODELS
PHYSICAL PROPERTIES
STRONG-COUPLING MODEL
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THALLIUM ALLOYS
THERMODYNAMIC PROPERTIES
TYPE-II SUPERCONDUCTORS
WEAK-COUPLING MODEL
360104 -- Metals & Alloys-- Physical Properties
656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
BCS THEORY
BOUNDARY CONDITIONS
CRITICAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
ENERGY
FREE ENERGY
GINZBURG-LANDAU THEORY
GORKOV-ELIASHBERG THEORY
INDIUM ALLOYS
LEAD ALLOYS
MAGNETIC FIELDS
MAGNETIC FLUX
MAGNETIZATION
MATHEMATICAL MODELS
MATHEMATICS
NUCLEAR MODELS
NUMERICAL ANALYSIS
PARTICLE MODELS
PHYSICAL PROPERTIES
STRONG-COUPLING MODEL
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THALLIUM ALLOYS
THERMODYNAMIC PROPERTIES
TYPE-II SUPERCONDUCTORS
WEAK-COUPLING MODEL