Ginzburg-Landau equations for a d-wave superconductor with paramagnetic impurities

Journal Article · Mon Apr 20 04:00:00 EDT 1998 · International Journal of Modern Physics B

DOI:https://doi.org/10.1142/S0217979298000582· OSTI ID:624096

Kim, W; Ting, C S ^[1]

---

1. Univ. of Houston, TX (United States)

Ginzburg-Landau (GL) equations for a d-wave superconductor with a repulsive s-wave interaction between electrons in the presence of paramagnetic impurities are microscopically derived based on the Born approximation. The diagrammatic relationships for the impurity-averaged product of Green`s functions are algebraically established. The effect of paramagnetic impurities on the transition temperature and the London penetration depth are discussed. GL equations for a superconductor with both s-wave and d-wave pairing interactions are also examined. The authors show that the transition temperature for a superconductor with an s-wave symmetry is suppressed twice as rapidly as that with a d-wave symmetry in the dilute impurity limit if the strength of the spin-non-flip scattering is much weaker than the spin-flip interaction.

• OSTI ID: 624096
• Journal Information: International Journal of Modern Physics B, Journal Name: International Journal of Modern Physics B Journal Issue: 10 Vol. 12; ISSN IJPBEV; ISSN 0217-9792
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
D WAVES
ENERGY GAP
GINZBURG-LANDAU THEORY
HIGH-TC SUPERCONDUCTORS
ORDER PARAMETERS
S WAVES
SUPERCONDUCTIVITY