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High-symmetrical dc-SQUID based on Nb/AlOx/Nb Josephson Junctions

Keywords:

E.A. Kostyurina – Student at MIPT, Engineer at Kotel’nikov IREE of RAS (Moscow) E-mail: kostyurina@hitech.cplire.ru K.V. Kalashnikov - Ph.D. (Phys.-Math.), Research Scientist, Kotel’nikov IREE of RAS (Moscow) L.V. Filippenko - Ph.D. (Phys.-Math.), Senior Research Scientist, Kotel’nikov IREE of RAS (Moscow) V.P. Koshelets - Dr.Sc. (Phys.-Math.), Professor, Head of Laboratory, Kotel’nikov IREE of RAS (Moscow)


SQUID-sensor based on tunnel junctions Nb/AlOx/Nb with integrated input coil has been developed and optimized. Experimental in-vestigation of the sensor has been conducted. Input sensitivity is 0.26 A/Φ0, magnetic flux noise is
References:

 

  1. Clarke J., Braginski A.I. The SQUID handbook. Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. 2004. 395 r.
  2. Knuutila J., Kajola M., Seppä H., Mutikainen R., Salmi J. // Journal of Low Temperature Physics. 1988. V. 71. № 5-6. R. 369-392.
  3. Filippenko L.V., Shitov S.V., Dmitriev P.N., Ermakov A.B., Koshelets V.P., Gao J.R. Applied Superconductivity 11 // IEEE Transactions on. 2001. 816 r.
  4. Enpuku K., Cantor R., Koch H. // J. Appl. Phys. 1992. № 72. 1000 r.

 

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