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 : APR 1988

Pagination or Media Count : 12

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