3-channel double relaxation oscillation SQUID magnetometer system with simple readout electronics

Y.H. Lee, J.M. Kim, H.C. Kwon, Y.K. Park, J.C. Park, M.J. van Duuren, D.J. Adelerhof, J. Flokstra, H. Rogalla

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Abstract

Recently several approaches have been made to simplify the readout scheme of the standard dc SQUID. A double relaxation oscillation SQUID(DROS) consisting of a hysteretic dc SQUID and a reference junction in series shunted by an inductor and a resistor can provide a very large flux-to-voltage transfer coefficient. Thus, a DROS with direct readout with room temperature dc amplifier can be a good candidate for the next-generation SQUID magnetometer. We report on the development of a 3-channel magnetometer system based on DROS. The DROS is based on Nb/AlO/sub X//Nb Josephson junctions and the main feature of the system is its simple readout electronics.
Original languageEnglish
Pages (from-to)2156-2159
Number of pages4
JournalIEEE transactions on applied superconductivity
Volume5
Issue number2
DOIs
Publication statusPublished - 1995

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    Lee, Y. H., Kim, J. M., Kwon, H. C., Park, Y. K., Park, J. C., van Duuren, M. J., ... Rogalla, H. (1995). 3-channel double relaxation oscillation SQUID magnetometer system with simple readout electronics. IEEE transactions on applied superconductivity, 5(2), 2156-2159. https://doi.org/10.1109/77.403010