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@Article{Granato:2016:MaFlDi,
               author = "Granato, Enzo",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Magnetic flux disorder and superconductor-insulator transition in 
                         nanohole thin films",
              journal = "Physical Review B",
                 year = "2016",
               volume = "94",
               number = "6",
                pages = "060504",
                month = "Aug.",
             abstract = "We study the superconductor-insulator transition in nanohole 
                         ultrathin films in a transverse magnetic field by numerical 
                         simulation of a Josephson-junction array model. Geometrical 
                         disorder due to the random location of nanoholes in the film 
                         corresponds to random flux in the array model. Monte Carlo 
                         simulation in the path-integral representation is used to 
                         determine the critical behavior and the universal resistivity at 
                         the transition as a function of disorder and average number of 
                         flux quanta per cell, f(o). The resistivity increases with 
                         disorder for noninteger f(o) while it decreases for integer f(o), 
                         and reaches a common constant value in a vortex-glass regime above 
                         a critical value of the flux disorder D-f(c). The estimate of 
                         D-f(c) and the resistivity increase for noninteger f(o) are 
                         consistent with recent experiments on ultrathin superconducting 
                         films with positional disordered nanoholes.",
                  doi = "10.1103/PhysRevB.94.060504",
                  url = "http://dx.doi.org/10.1103/PhysRevB.94.060504",
                 issn = "1098-0121",
             language = "en",
           targetfile = "granato_magnetic.pdf",
        urlaccessdate = "27 nov. 2020"
}


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