Physics – Condensed Matter – Superconductivity
Scientific paper
2008-02-18
Superconductor Science and Technology 21 (2008) 045002
Physics
Condensed Matter
Superconductivity
Scientific paper
10.1088/0953-2048/21/4/045002
In this paper, we report on different phenomena related to the magnetic properties of artificially prepared highly ordered (periodic) two-dimensional Josephson junction arrays (2D-JJA) of both shunted and unshunted Nb-AlOx-Nb tunnel junctions. By employing mutual-inductance measurements and using a high-sensitive bridge, we have thoroughly investigated (both experimentally and theoretically) the temperature and magnetic field dependence of complex AC susceptibility of 2D-JJA. We also demonstrate the use of the scanning SQUID microscope for imaging the local flux distribution within our unshunted arrays.
Araujo-Moreira Fernando M.
Sergeenkov Sergei
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