Measurements of the excess conductivity above the transition temperature on selected, high-quality, superconducting epitaxial films of the 2:2:1:2-phase Bi-Sr-Ca-Cu-0 (BSCCO), obtained by liquid-phase epitaxy, are reported. The data confirm the two-dimensional nature of the thermodynamical fluctuations in BSCCO compounds in a wide range of temperature above T(c) and very good agreement is found with an extended version of the Aslamazov-Larkin theory [L. Reggiani, R. Vaglio, and A. A. Varlamov, Phys. Rev. B 44, 9541 (199 1)].
Balestrino, G., Marinelli, M., Milani, E., Reggiani, L., Vaglio, R., Varlamov, A.a. (1992). Excess conductivity in 2:2:1:2-phase Bi-Sr-Ca-Cu-O epitaxial thin films. PHYSICAL REVIEW. B, CONDENSED MATTER, 46(22), 14919-14921 [10.1103/PhysRevB.46.14919].
Excess conductivity in 2:2:1:2-phase Bi-Sr-Ca-Cu-O epitaxial thin films
Balestrino G.;Marinelli M.;Milani E.;
1992-01-01
Abstract
Measurements of the excess conductivity above the transition temperature on selected, high-quality, superconducting epitaxial films of the 2:2:1:2-phase Bi-Sr-Ca-Cu-0 (BSCCO), obtained by liquid-phase epitaxy, are reported. The data confirm the two-dimensional nature of the thermodynamical fluctuations in BSCCO compounds in a wide range of temperature above T(c) and very good agreement is found with an extended version of the Aslamazov-Larkin theory [L. Reggiani, R. Vaglio, and A. A. Varlamov, Phys. Rev. B 44, 9541 (199 1)].I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
