Sefrioui, ZouhairArias Serna, DiegoLeón Yebra, CarlosSantamaría Sánchez-Barriga, JacoboGonzález Herrera, Elvira MaríaVicent López, José LuisPrieto, P.2023-06-202023-06-202004-08-091098-012110.1103/PhysRevB.70.064502https://hdl.handle.net/20.500.14352/51425© 2004 The American Physical Society. This work was supported by MCYT MAT 2002-2642 and CAM 07N/0032/2002.We investigate the zero-magnetic-field dynamic scaling in Bi_(2)Sr_(2)CaCu_(2)O_(8) thin films from nonlinear currentvoltage sI-Vd characteristics and by using the concavity criterion recently proposed by Strachan et al. [Phys. Rev. Lett. 87, 067007 (2001)]. We find that fresh samples show a BKT-like transition with z=0.8, smaller than expected for a conventional Berezinskii-Kosterlitz-Thouless transition. The effect of sample size and finite Josephson coupling are discussed. We examine the effect of thermally-induced disorder in the oxygen sublattice finding that the BKT-like transition is suppressed by point disorder.engjournal articlehttp://dx.doi.org/10.1103/PhysRevB.70.064502http://journals.aps.org/open access537538.9Kosterlotz-Thouless transitionJosephson-junction arrays2-Dimensional superconductorsCritical-behaviorVortex fluctuationsPhase-transitionsQuenched disorderCoulomb gasXY modelsSuperfluids.ElectricidadElectrónica (Física)Física de materialesFísica del estado sólido2202.03 Electricidad2211 Física del Estado Sólido