@Article{Granato:2016:SuTrJo,
author = "Granato, Enzo",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "Superconductor-insulator transition of Josephson-junction arrays
on a honeycomb lattice in a magnetic field",
journal = "European Physical Journal B",
year = "2016",
volume = "89",
number = "3",
pages = "68",
month = "Mar.",
keywords = "Solid State and Materials.",
abstract = "We study the superconductor to insulator transition at zero
temperature in aJosephson-junction array model on a honeycomb
lattice with f flux quantum perplaquette. The path integral
representation of the model corresponds to a (2 + 1)-dimensional
classical model, which isused to investigate the critical behavior
by extensive Monte Carlo simulations on largesystem sizes. In
contrast to the model on a square lattice, the transition is found
to befirst order for f = 1 /3 and continuous for f = 1 / 2 but in
a different universality class.The correlation-length critical
exponent is estimated from finite-size scaling of
vortexcorrelations. The estimated universal conductivity at the
transition is approximately fourtimes its value for f =0. The
results are compared with experimental observations on
ultrathinsuperconducting films with a triangular lattice of
nanoholes in a transverse magneticfield.",
doi = "10.1140/epjb/e2016-60478-y",
url = "http://dx.doi.org/10.1140/epjb/e2016-60478-y",
issn = "1434-6028",
language = "en",
targetfile = "granato_superconductor.pdf",
urlaccessdate = "17 jan. 2021"
}