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arXiv · 0802.2485

Dynamical reentrance and geometry imposed quantization effects in Nb-AlOx-Nb Josephson junction arrays

Fernando M. Araujo-Moreira·Sergei Sergeenkov
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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.

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Fernando M. Araujo-Moreira, Sergei Sergeenkov. 2008-02-19. Dynamical reentrance and geometry imposed quantization effects in Nb-AlOx-Nb Josephson junction arrays. https://doi.org/10.1088/0953-2048%2F21%2F4%2F045002

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