@Article{Granato:2020:DiSuIn,
               author = "Granato, Enzo",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Disorder-induced superconductor to insulator transition and finite 
                         phase stiffness in two-dimensional phase-glass models",
              journal = "Physical Review B",
                 year = "2020",
               volume = "102",
               number = "18",
                pages = "e184503",
                month = "Nov.",
             abstract = "We study numerically the superconductor to insulator transition in 
                         two-dimensional phase-glass (or chiral-glass) models with varying 
                         degree of disorder. These models describe the effects of gauge 
                         disorder in superconductors due to random negative 
                         Josephson-junction couplings, or n junctions. Two different models 
                         are considered, with binary and Gaussian distribution of quenched 
                         disorder, having nonzero mean. Monte Carlo simulations in the 
                         path-integral representation are used to determine the phase 
                         diagram and critical exponents. In addition to the usual 
                         superconducting and insulating phases, a chiral-glass phase occurs 
                         for sufficiently large disorder, with random local circulating 
                         currents of different chiralities. A transition from 
                         superconductor to insulator can take place via the intermediate 
                         chiral-glass phase. We find, however, that the chiral-glass state 
                         has a finite phase stiffness, being still a superconductor, 
                         instead of the Bose metal, which has been suggested by mean-field 
                         theory.",
                  doi = "10.1103/PhysRevB.102.184503",
                  url = "http://dx.doi.org/10.1103/PhysRevB.102.184503",
                 issn = "1098-0121",
             language = "en",
           targetfile = "granato_disorder.pdf",
        urlaccessdate = "26 abr. 2024"
}