Simulation of high field induced first-order phase transition in Bi2Sr2CaCu2O8

The occurrence and nature of first-order transitions (FOT) in Bi2Sr2CaCu2O8 (BSCCO) are still open issues, although results from a number of experiments do support a FOT both at low and high fields. We present a FOT obtained via Monte Carlo simulations using the Lawrence-Doniach model for layered su...

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Published inPhysica. C, Superconductivity Vol. 408-410; pp. 549 - 550
Main Authors Viana, Leonardo P., Raposo, E.P., Coutinho-Filho, M.D.
Format Journal Article
LanguageEnglish
Published 01.08.2004
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Summary:The occurrence and nature of first-order transitions (FOT) in Bi2Sr2CaCu2O8 (BSCCO) are still open issues, although results from a number of experiments do support a FOT both at low and high fields. We present a FOT obtained via Monte Carlo simulations using the Lawrence-Doniach model for layered superconductors, focusing on a clean 3D sample of BSCCO, with dc field applied perpendicular to the CuO2 planes. Our results confirm Nelson's predictions for the random-walk-like diffusion of melted lines, contrarily to some recent suggestions. Further results for the z-dependent density-density correlation function indicate that in the high field regime the CuO2 planes decouple along with line melting, in agreement with experimental observations in BSCCO. Author
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ISSN:0921-4534
DOI:10.1016/j.physc.2004.03.209