Dynamical reentrance and geometry imposed quantization effects in Nb-AlOx-Nb Josephson junction arrays
Superconductivity
2008-02-19 v2
Abstract
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.
Keywords
Cite
@article{arxiv.0802.2485,
title = {Dynamical reentrance and geometry imposed quantization effects in Nb-AlOx-Nb Josephson junction arrays},
author = {Fernando M. Araujo-Moreira and Sergei Sergeenkov},
journal= {arXiv preprint arXiv:0802.2485},
year = {2008}
}