%0 Journal Article
%A Sefrioui, Zouhair
%A Arias Serna, Diego
%A León Yebra, Carlos
%A Santamaría Sánchez-Barriga, Jacobo
%A González Herrera, Elvira María
%A Vicent López, José Luis
%A Prieto, P.
%T Zero-magnetic-field dynamic scaling in Bi_(2)Sr_(2)CaCu_(2)O_(8) thin films
%D 2004
%@ 1098-0121
%U https://hdl.handle.net/20.500.14352/51425
%X 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.
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