Fluctuation conductivity and the dynamical universality class of the superconducting transition in the high-T-c cuprates

ROJAS, J.R.; JURELO, A.R.; COSTA, R.M.; FERREIRA, L.M.; PUREUR, P.; ORLANDO, M.T.D.; PRIETO, P.; NIEVA, G.

PHYSICA C - SUPERCONDUTIVITY

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2000 vol. 341 p. 1911 - 1912

0921-4534

Systematic measurements of the fluctuation conductivity in several high-temperature superconducting cuprates show the occurrence of a genuine critical regime. The conductivity exponent is consistent with the predictions of the 3D-XY universality class and yields a dynamical critical exponent z = 1.5.