Accession Number:

ADA193432

Title:

Coupled Even-Parity Superconducting States: Square Lattice.

Descriptive Note:

Technical rept.,

Corporate Author:

STATE UNIV OF NEW YORK AT BUFFALO DEPT OF CHEMISTRY

Personal Author(s):

• Langner, A.
• Sahu, D.
• George, Thomas F.

Report Date:

1988-04-01

Pagination or Media Count:

12.0

Abstract:

The Ginzburg-Landau free energy density for the coupling of s-wave and d-wave superconducting states in square planar symmetry is considered. Four single-order parameter states and a mixed state are enumerated along with analytical relations for their thermodynamic critical fields, Hc, and critical temperatures. The differential Ginzburg-Landau equations are derived and applied to the calculation of the upper and lower critical fields, Hc2 and Hcl. The relevance of the analysis to superconductivity in the Cu-O planes of the high-Tc materials is discussed. Keywords Superconducting states, Coupled even parity, Square lattice, Ginzburg Landau theory, Free energy, s-Waves, d-Waves.

Descriptors:

• *SUPERCONDUCTORS
• *LATTICE DYNAMICS
• COUPLING(INTERACTION)
• CRITICAL TEMPERATURE
• FREE ENERGY
• PARITY
• PLANAR STRUCTURES
• SUPERCONDUCTIVITY
• SYMMETRY
• THERMODYNAMICS
• COPPER COMPOUNDS
• OXIDES
• X RAY SCATTERING

Subject Categories:

• Electricity and Magnetism
• Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE