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Towards a dc SQUID read-out for the normal metal hot-electron microbolometer

  • M. Tarasov*
  • , S. Gudoshnikov
  • , A. Kalabukhov
  • , Heikki Seppä
  • , Mikko Kiviranta
  • , L. Kuzmin
  • *Corresponding author for this work
  • Chalmers University of Technology
  • Kotel'nikov Institute of Radio Engineering and Electronics (Russian Academy of Sciences)
  • Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation
  • Moscow State University (MSU)

Research output: Contribution to journalArticleScientificpeer-review

Abstract

A prototype of SQUID read-out for current measurements at the output of a normal metal hot-electron microbolometer has been developed and tested. The system is based on serial VTT dc SQUID and input μ-metal core solenoid transformer. The achieved current resolution is 300 fA/Hz1/2. Johnson noise of metal resistor and shot noise of tunnel junction were used for current calibration of SQUID read-out. The current noise spectra of 35 k SIN tunnel junction measured at different bias voltages are presented.
Original languageEnglish
Pages (from-to)161-165
JournalPhysica C: Superconductivity and its Applications
Volume368
Issue number1-4
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

Keywords

  • dc SQUID
  • SIN tunnel junction
  • SQUID femtoamperemeter

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